CAMCO
Filed: February 24, 1970
SUBSURFACE WELL CONTROL EQUIPMENT-NAMELY, PLUNGER LIFTS; PLUNGER LUBRICATORS; MECHANICAL TUBING STOPS; SPRING ACTUATED COLLAR…
Owned by: CAMCO, INCORPORATED
Serial Number: 72352082
CAMCO
Filed: February 24, 1970
MAGNETIC LIMIT SWITCHES, CAPACITANCE PROBES, ELECTRONIC SCANNERS, ELECTRONIC LEVEL SWITCHES, ANALOG TO DIGITAL CONVERTERS…
Owned by: CAMCO, INCORPORATED
Serial Number: 72352324
CAMCO
Filed: February 24, 1970
METERING VALVES, TIME CYCLE CONTROLLERS FOR CONTROLLING FLUID FLOW, TUBING CALIPERS FOR MEASURING WELL TUBING, FLUID MEASURING…
Owned by: CAMCO, INCORPORATED
Serial Number: 72352325
DURACLAD
Filed: August 28, 1989
CARBIDE WEAR PROTECTIVE COATING SOLD AS A COMPONENT OF POWER-OPERATED DRILL BITS FOR THE OIL AND GAS INDUSTRY
Owned by: CAMCO, INCORPORATED
Serial Number: 73821825
