71540842
Nov 12, 1947
Sep 26, 1950
MANNING MAXWELL & MOORE INCORPORATED
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SAFETY VALVES FOR USE IN RELIEVING EXCESS PRESSURE OF GASES, LIQUIDS AND VAPORS, AND PARTS OF SAID VALVES-NAMELY, FEATHERS, DISCS, BUSHINGS, SPINDLES, SPRINGS, WASHERS, COMPRESSION SCREWS, AND BASES