All Patents in class 137/580


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All Patents in class 137/580
Patents 1 - 1 of 1
Number	Title	Classification(s)
2,313,438	Fluid Operated Gear Shifting Mechanism	116/277, 137/553, 137/580, 137/635, 137/636, 192/3.57, 29/42, 74/346, 82/143, 91/448