Develco, Inc. Trademarks
EMTEL
Filed: June 21, 1979
Electrical Frequency Discriminators, Isolation Signal Amplifiers, Time and Frequency Standards, Data Transmission Links,…
Owned by: Develco, Inc.
Serial Number: 73220607
PROVEN OILWELL SERVICE INSTRUMENTS
Filed: January 17, 1983
BORE HOLE MEASUREMENT INSTRUMENTS AND PARTS THEREFOR USED IN OIL AND GAS EXPLORATION AND PRODUCTION
Owned by: Develco, Inc.
Serial Number: 73409817
DEVELCO
Filed: March 15, 1983
Magnetometers and Bore Hole Measurement Sensors for Use in Oil Well Drilling Industry
Owned by: Develco, Inc.
Serial Number: 73417337
EM-SCSSV
Filed: June 30, 1986
SAFETY VALVES, COMMUNICATION AND CONTROL ARRANGEMENTS FOR SAFETY VALVES MARKETED TO THE OIL AND GAS INDUSTRY
Owned by: Develco, Inc.
Serial Number: 73606962
