NITELIGHTER
Filed: August 31, 1962
Automatic Photo-Electronic Light Switches
Owned by: Sigma Instruments, Inc.
Serial Number: 72152343
SIGMA
Filed: September 14, 1962
ELECTROMECHANICAL RELAYS, REED RELAYS, ELECTROMECHANICAL MAGNETICALLY LATCHING RELAYS, [ ACOUSTICAL SWITCHES, ] STEPPING…
Owned by: Sigma Instruments, Inc.
Serial Number: 72153221
DUO-VOLT
Filed: November 16, 1962
Photo-Electric Light Control Switches
Owned by: Sigma Instruments, Inc.
Serial Number: 72157413
SUNSYNC
Filed: December 12, 1962
TIME SWITCHES COMBINED WITH PHOTOELECTRIC CONTROL CIRCUITS
Owned by: Sigma Instruments, Inc.
Serial Number: 72159003
CYCLOPULSER
Filed: October 17, 1963
DRIVE CIRCUITS FOR STEPPING MOTORS AND STEPPING SWITCHES
Owned by: Sigma Instruments, Inc.
Serial Number: 72179274
DATACEL
Filed: December 11, 1963
PORTABLE AMPLIFIERS WITH SPACE AND WIRING FOR METERS, AMMETERS, JUNCTION BOXES, POWER LINE SENSING AND RELATED EQUIPMENT…
Owned by: Sigma Instruments, Inc.
Serial Number: 72182838
FP
Filed: February 17, 1964
RELAYS, PHOTO RELAYS, CURRENT SENSORS, FLASHERS, AMPLIFIERS, ADAPTERS FOR LIGHTING CONTROLS FOR LUMINARIES, CIRCUITRY FOR…
Owned by: Sigma Instruments, Inc.
Serial Number: 72186900
Image Trademark
Filed: June 24, 1964
ELECTROMECHANICAL RELAYS, REED RELAYS, ELECTROMECHANICAL MAGNETICALLY LATCHING RELAYS, [ ACOUSTICAL SWITCHES, ] STEPPINGMOTORS…
Owned by: Sigma Instruments, Inc.
Serial Number: 72196401
S
Filed: December 11, 1964
ELECTROMECHANICAL RELAYS, [ REED RELAYS, ] ELECTROMECHANICAL MAGNETICALLY LATCHING RELAYS, [ ACOUSTICAL SWITCHES, STEPPING…
Owned by: Sigma Instruments, Inc.
Serial Number: 72207988
S
Filed: July 13, 1966
ELECTRICAL TESTING AND MEASURING EQUIPMENT-NAMELY, ELECTRICAL AND MAGNETIC PICK-UP EQUIPMENT FOR TESTING POWER LINES, INDICATING…
Owned by: Sigma Instruments, Inc.
Serial Number: 72250179
FP
Filed: October 27, 1966
RELAYS, PHOTO RELAYS, CURRENT SENSORS, [ FLASHERS, AMPLIFIERS, ] ADAPTERS FOR LIGHTING CONTROLS FOR LUMINARIES, CIRCUITRY…
Owned by: Sigma Instruments, Inc.
Serial Number: 72257331
DATACEL
Filed: January 11, 1967
OPTOELECTRONIC AND OPTICAL ELECTRONIC LIGHT SENSITIVE LOGIC, SWITCHING AND DETECTING DEVICES
Owned by: Sigma Instruments, Inc.
Serial Number: 72262356
SIGMA
Filed: August 13, 1968
DIGITAL DATA PROCESSING SYSTEMS AND SYSTEM UNITS, INCLUDING DIGITAL COMPUTERS, MEMORY UNITS, INPUT-OUTPUT PROCESSORS, INPUT…
Owned by: Sigma Instruments, Inc.
Serial Number: 72305075
SIGMA
Filed: May 28, 1970
COMPUTER PROGRAMS IN FORMS SUCH AS PAPER TAPE, MAGNETIC TAPE, PUNCHED CARDS AND DISCS, AND PRINTED INSTRUCTION MATERIAL…
Owned by: Sigma Instruments, Inc.
Serial Number: 72361174
SIGMA
Filed: June 4, 1970
PROTECTIVE AND CONTROLLING SYSTEMS FOR POWER LINES-NAMELY, VOLTAGE SENSING CAPACITOR CONTROLS, CURRENT SENSING CAPACITOR…
Owned by: Sigma Instruments, Inc.
Serial Number: 72361760
DATACEL
Filed: June 4, 1970
PHOTORELAYS
Owned by: Sigma Instruments, Inc.
Serial Number: 72361761
LUMIGRAPH
Filed: August 29, 1979
Electrical Instruments-Namely, for Indicating Values in an Analog Manner
Owned by: Sigma Instruments, Inc.
Serial Number: 73229357
SIGMASTER
Filed: January 31, 1980
Inspection Equipment which Forms a Mechanical Fixturing System that Enables Simple, Multi-Dimensional Inspection Fixtures…
Owned by: Sigma Instruments, Inc.
Serial Number: 73248287
SIGMA
Filed: January 31, 1980
Air Electronic Converters for Pneumatic Gauging Heads, Multiplex Switch Units, Contact Bore Gauges, Height Transfer and…
Owned by: Sigma Instruments, Inc.
Serial Number: 73248288
SIGMASIZE
Filed: January 31, 1980
Electronic Gauging Indicator Units
Owned by: Sigma Instruments, Inc.
Serial Number: 73248289
SIGMACOLUMN
Filed: February 19, 1980
Electronic Vertical Light Column Gauging Indicator
Owned by: Sigma Instruments, Inc.
Serial Number: 73250640
FISHER PIERCE
Filed: August 17, 1981
MICRORPROCESSOR OR MICROCOMPUTER CONTAINING SUPERVISORY CONTROLLERS AND LOAD MANAGEMENT CONTROLLERS-NAMELY, REMOTE CONTROLS…
Owned by: Sigma Instruments, Inc.
Serial Number: 73323892
FLAT-PAK
Filed: September 24, 1982
Electric Meters-Namely, Panel Meters
Owned by: Sigma Instruments, Inc.
Serial Number: 73388474
ENERGY MONITOR
Filed: February 21, 1984
LOCALLY READABLE AND REMOTELY READABLE WATT-HOUR METERS
Owned by: Sigma Instruments, Inc.
Serial Number: 73466354
SIGMAFLEX
Filed: February 19, 1987
COMPUTERIZED FLEXIBLE CO-ORDINATE GAUGING APPARATUS FOR AUTOMATIC ON-LINE GAUGING OF ARTICLES AND STRUCTURAL PARTS FOR SUCH…
Owned by: Sigma Instruments, Inc.
Serial Number: 73645795
VIP
Filed: November 13, 1987
SENSORS FOR SENSING ELECTRICAL VALUES IN POWER LINES
Owned by: Sigma Instruments, Inc.
Serial Number: 73694990
