JOHNSON
Filed: July 14, 1947
WELL SCREENS USED IN CONJUNCTION WITH DEEP WELLS FOR PUMPING LIQUIDS SUCH AS WATER AND OIL
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 71528573
GEMOCO
Filed: August 10, 1951
OIL WELL TUBING CENTRALIZERS [ AND PIPE LIFTERS ]
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 71617538
STRESSTECTOR
Filed: August 24, 1960
Electro-Mechanical Instrument for Detecting Differences in Magnetic Permeability in a Well Bore
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 72103338
HYDROSPHERE
Filed: August 11, 1980
Filters for Use in Various Industrial Applications Involving Liquid/Solid Separation
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 73273802
WILLIAMS
Filed: September 30, 1982
Rental, Service, and Repair of Rotating Control Heads for Air, Gas, or Mud Well Drilling
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 73395628
WILLIAMS
Filed: September 30, 1982
Replacement Parts for Rotating Control Heads for Well Drilling; Including Specifically, Ring Gaskets and Stripper Rubbers…
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 73395629
BIT SAVER
Filed: September 16, 1988
WELL SERVICING FLOAT SHOES AND FLOAT COLLARS FOR USE IN DRILLING FOR OIL AND NATURAL GAS
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 73753166
MCMURRY
Filed: June 1, 1990
automatic valves for use in oil and gas drilling; namely, gas lift, water injection, orifice, circulation, chemical injection…
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 74064883
FREE-FLOW
Filed: June 24, 1991
metal screens for water wells
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 74179228
PERMA-BOND
Filed: June 24, 1991
metal screens for oil and gas wells
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 74179265
TRANS-FOAM
Filed: April 3, 1992
chemicals; namely, a foaming agent for use in air-foam drilling in hydrocarbon recovery
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 74262238
RIV
Filed: December 14, 1995
manually operated metal control valves for controlling downhole fluid flow between a tubing string and a well annulus
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 75032311
BIGFOOT
Filed: May 30, 1997
oilfield equipment, namely, perforating guns used in subsurface boreholes
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 75300784
WELLSMART
Filed: June 26, 1997
oil field tools and equipment for drilling oil and gas wells and for reentry into existing oil and gas wells
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 75315020
TT-WHIP
Filed: September 5, 1997
Wellbore diverters and whipstocks for diverting the direction of motion of a wellbore mill or drill and for use in a "through…
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 75352192
CT-WHIP
Filed: September 5, 1997
Wellbore diverters and whipstocks for diverting the direction of motion of a wellbore mill or drill used on coiled tubing…
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 75352318
TT-PATCH
Filed: September 5, 1997
Wellbore patch systems for patching a hole or opening in a wellbore tubular and for use in a "through tubing" method
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 75352319
CT-PATCH
Filed: September 5, 1997
Wellbore patch systems for patching a hole or opening in a wellbore tubular and for use with coiled tubing
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 75352445
WOLF PACK
Skid-mounted compressor machine for extracting nitrogen from the air, compressing it, and pumping it down a borehole as…
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 75548921
W
OIL FIELD FISHING, CUTTING, AND RENTAL EQUIPMENT, NAMELY METAL DRILLING PIPE
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 75626353
W WEATHERFORD GLOBAL
Natural gas compressors, specialty gas compressors, and natural gas engines not for use in land vehicles
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 75708776
OMNILIFT
Technical consultation and research in the field of oil and gas well production and performance optimization; design for…
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 76032614
AIM
Oil and gas well completion and production equipment, namely, electromechanical surface controllers, remote computer terminals…
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 76032615
GRIFFIN
Oil and gas well completion and production equipment, namely, pumps and surface drives
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 76063544
MUDMASTER
Metal drilling fluid filters for machines for use in the oil and/or gas drilling industry
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 76143472
FAST
Oil and gas well completion and production tools made primarily of metal,
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 76211304
EASTMAN WHIPSTOCK
Oil and gas well drilling machines and replacement parts thereof
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 76219660
HORIZON
Power operated oil and gas well completion and production equipment, namely, packers
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 76231581
WELL MANAGEMENT SYSTEM
Computer hardware and software combined with surface equipment for controlling oil and gas well completion and production…
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 76242703
OILMASTER
APPARATUS, NAMELY A HYDRAULIC PUMPING SYSTEM, FOR USE IN THE CONSTRUCTION, MAINTENANCE AND REPAIR OF OIL AND GAS WELLS,…
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 76310595
ALPHA-CLEAN
Environmentally Friendly Pipeline Cleaning Composition
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 76346504
FREEFLEX
Filter having the shape of a duct, for radial flow reactor
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 76370425
OPTIMISER
Filters having the shape of a duct, for radial flow reactor, for industrial, agriculture, municipal, environmental, oil…
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 76371231
CRES
Expandable tubing, slotted tubing, coiled tubing, casing, liner, completion liner, couplings, rollers and down hole tractors…
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 76446482
GET A GRIP
Inflatable thru-tubing packers, bridge plugs, production packers, cement retainers and jet straddles used in the oil and…
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 76463869
STABBERLESS
Oil and gas well drilling tools and equipment, namely, a remote-controlled machine for running casing and tubing during…
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 77459333
STRATAPAC
Filters for use in oil and gas wells
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 78328229
MULTICAL
A multi-channel caliper tool comprising caliper arms, sensors, odometer wheels and the lastest "flash memory" data storage…
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 78435209
EVI
Operation and management of oil and gas interests, namely, exploration, drilling, and well production facilities
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 78459683
GUIBERSON
Oil and gas well drilling, completion and production equipment, namely, swabbing equipment to include mandrels and cups;…
Owned by: WEATHERFORD/LAMB, INC.
Serial Number: 78558138
