31 POSITIVE, CONDENSED AND FILTERED SYSTEM, COMPRISING CRANKCASE VENTILATOR, OIL REGULATOR-COOLER-FILTER, AND CRANKCASE OIL FILTER TO CONTROL EXHAUST AND CRANKCASE EMISSIONS ON INTERNAL COMBUSTION ENGINES, CLEAN ENGINE AND CLEAN AIR
Trademark Events
Mar 28, 1994
Expired Sec. 9
Feb 12, 1979
Registered - Sec. 8 (6-Yr) Accepted & Sec. 15 Ack.