14 Srientific American, | JANUARY 2, 1892. … 95 MILK ST., BOSTON, MASS, Gate Valve for low etc. Complete list of patents each week. pressures, steam, water, Terms of Subscription.—One copy of the SCIEN- oils, etc., being simpler more compact, hette‘ TIFIC AMERICAN Will be sent for one year—52 numbers— STEAM PACKING suited ‘for the purpose…
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