FRAHM
Filed: November 4, 1947
FREQUENCY METERS AND TACHOMETERS
Owned by: JAMES G. BIDDLE CO.
Serial Number: 71540030
TTR
Filed: September 12, 1951
PORTABLE DIRECT-READING INSTRUMENT FOR MEASURING TURN RATIO OF POWER AND DISTRIBUTION TRANSFORMERS
Owned by: JAMES G. BIDDLE CO.
Serial Number: 71618672
MENTOR
Filed: December 28, 1967
LOGIC-ASSISTED MANUALLY OPERATED ELECTRONIC INSTRUMENT WHEREBY LIGHTS ARE SEQUENTIALLY ACTUATED TO INDICATE WHAT MECHANICAL…
Owned by: JAMES G. BIDDLE CO.
Serial Number: 72287695
VERSAPOT
Filed: August 30, 1971
CALIBRATOR/POTENTIOMENTER
Owned by: JAMES G. BIDDLE CO.
Serial Number: 72401483
BIDDLE
Filed: February 20, 1976
INDUSTRIAL, POWER AND LABORATORY PRECISION ELECTRICAL INSTRUMENTS FOR MEASURING OR TESTING
Owned by: JAMES G. BIDDLE CO.
Serial Number: 73077844
DLRO
Filed: November 18, 1977
ELECTRIC TEST EQUIPMENT COMPRISING OHMMETERS
Owned by: JAMES G. BIDDLE CO.
Serial Number: 73149182
VERSA-CAL
Filed: April 24, 1981
Digital Instrument for Measuring and Calibrating
Owned by: JAMES G. BIDDLE CO.
Serial Number: 73307177
DART
Filed: March 27, 1990
electrical detector instruments for determining cable fault locations in electrical power cables
Owned by: JAMES G. BIDDLE CO.
Serial Number: 74043039
DIFFERENTIAL ARC REFLECTOMETRY
Filed: March 27, 1990
a combination of equipment for locationg faults on electric power cables comprising a pulse generator, an electronic power…
Owned by: JAMES G. BIDDLE CO.
Serial Number: 74043040
DIFFERENTIAL ARC REFLECTOMETRY TECHNIQUE
Filed: March 27, 1990
a combination of equipment for locating faults on electric power cables comprising a pulse generator, an electronic power…
Owned by: JAMES G. BIDDLE CO.
Serial Number: 74043041
FAULT BUSTER
Filed: September 14, 1990
electrical instrument for connection to underground, high voltage power cables to locate faults in such cables; namely,…
Owned by: JAMES G. BIDDLE CO.
Serial Number: 74097938
ACCUTRACE
Filed: September 14, 1990
electronic instruments for finding the location of buried cables and conduits
Owned by: JAMES G. BIDDLE CO.
Serial Number: 74097939
FAULT FERRET
Filed: March 3, 1992
electrical apparatus for use in high voltage power systems to locate faults
Owned by: JAMES G. BIDDLE CO.
Serial Number: 74251823
BIDDLE
Filed: June 18, 1992
electrical capacitance, dielectric, insulation, impedance, partial discharge, phasing, and/or resistance test sets with…
Owned by: JAMES G. BIDDLE CO.
Serial Number: 74286526
