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All Patents in class 137/385
Patents 1 - 2 of 2
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NumberDatePatenteeTitleType
1,104,022Jul. 21, 1914M. TuttleCombined Wrench and Lock For Shut-Off Cocks
1,621,738Mar. 22, 1927H.S. Baker, J.W. MotherwellRetard devicevalves
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