U.S. federal trademark · Serial No. 71505610 · Reg. No. 0506392
GREASE AND OIL RETAINERS OF THE FRICTION TYPE USED TO SEAL THE SPACE BETWEEN A SHAFT AND AN ENGINE WALL-NAMELY, RETAINERS MADE OF UNITARY CIRCULAR RINGS OF COMPOSITION MATERIALS; RETAINERS MADE OF UNITARY CIRCULAR RINGS OF COMPOSITION MATERIALS AND HAVING A SPRING FITTED THERETO; RETAINERS MADE OF UNITARY CIRCULAR RINGS OF COMPOSITION, HAVING A SPRING FITTED THERETO AND THE WHOLE HELD WITHIN A CAGE OR SHELL OF DUCTILE STEEL, BRASS, OR ALUMINUM; AND RETAINERS MADE OF UNITARY CIRCULAR RINGS OF COMPOSITION BONDED TO A CAGE OR SHELL OF METAL
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