71605834
Nov 2, 1950
Oct 16, 1951
VALVES FOR WATER, STEAM, AND GAS AS USED IN PIPE LINES; COCKS; PIPE-FITTINGS-NAMELY, ELBOWS, T'S, CROSSES, AND OTHER FITTINGS WHICH SERVE AS PIPE CONNECTIONS BUT WHICH CANNOT BE CLOSED OR OPENED TO CONTROL THE FLOW OF FLUID THROUGH THE PIPES; PIPE-UNIONS; NOZZLES FOR COMPRESSED AIR, OIL, AND SANDBLAST; POP-VALVE MUFFLERS, SIGHT FEED-VALVES, LOW WATER ALARMS FOR STEAM BOILERS AND FUSIBLE PLUGS FOR LOW WATER ALARMS FOR STEAM BOILERS
Firearms