23 MECHANICALLY AND CENTRIFUGAL OPERATED DUST SEPARATORS, COLLECTORS AND OIL SKIMMERS USING TRAVELLING BELTS FOR SEPARATING OIL FROM WATER, AND NOT INCLUDING BLOWERS AND FANS PER SE
Trademark Events
Aug 29, 1994
Expired Sec. 9
May 14, 1979
Registered - Sec. 8 (6-Yr) Accepted & Sec. 15 Ack.