FRACSURE
Filed: February 21, 1989
OIL WELL TREATMENT SERVICES
Owned by: NOWSCO WELL SERVICE LTD.
Serial Number: 73781648
STRATA VISION
Filed: February 21, 1989
OIL WELL INSPECTION SERVICES
Owned by: NOWSCO WELL SERVICE LTD.
Serial Number: 73781651
STRATA-VISION
Filed: February 21, 1989
OIL WELL INSPECTION SERVICES
Owned by: NOWSCO WELL SERVICE LTD.
Serial Number: 73781655
S M A R T
Filed: August 22, 1990
remote data gathering, control and telemetry systems for use in monitoring and controlling fluid flow rates and quantities…
Owned by: NOWSCO WELL SERVICE LTD.
Serial Number: 74090634
ENVIRO-FRAC
Filed: November 28, 1990
chemicals; namely, fracturing fluids for use in oil and gas fields
Owned by: NOWSCO WELL SERVICE LTD.
Serial Number: 74120348
NOWFERR
Filed: August 21, 1992
chemicals; namely, powdered reducing agent, liquid reducing agent, powdered reduction catalyst, liquid reduction catalyst…
Owned by: NOWSCO WELL SERVICE LTD.
Serial Number: 74307256
