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All Patents in class 251/233
Patents 1 - 5 of 5
Number	Title	Classification(s)
312,906	Gas Governor for Gas Engines	137/505.4, 251/228, 251/233
673,859	Reversing Valve Gear	251/233
682,550	Oiler	184/82, 184/86, 251/233, 251/297
1,109,807	Valve Gear for Steam Engines	251/233, 251/240, 91/242, 91/243
2,505,975	Reciprocating Travel Controlling Means	236/1R, 236/68R, 236/86, 236/DIG.1, 251/122, 251/208, 251/233, 251/279, 74/53, 92/13.5

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