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All Patents in class 277/502
Patents 1 - 2 of 2
Picture
Number
Date
Patentee
Title
933,698
Sep. 07, 1909
G.L. Crook
Valve
1,229,459
Jun. 12, 1917
C.B. Jahnke, F.G. Hobart
Suction-valve holder
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