72038280
Oct 3, 1957
Jul 29, 1958
GRINNELL FIRE PROTECTION SYSTEMS COMPANY INC.
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STATIONARY FIRE EXTINGUISHING SYSTEM AND FOAM PROPORTIONING AND FOAM AGITATING MEANS, PIPE, PIPE FITTINGS, VALVES, COCKS, NOZZLES AND FOAM MAKERS, AND FOAM SPRAY HEADS FOR USE IN SUCH A SYSTEM