All Patents in class 137/493


	Home\| FAQ	Search:Advanced\|Person\|Company\| Type\|Class	Login


Quick search:	Patent number:	Patent Date:

All Patents in class 137/493
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	540,760	Jun. 11, 1895	S. Sawyer	Automatic air and vacuum valve
	2,384,169	Sep. 04, 1945	G.E. Huck, F.O. Luenberger	Controlling pressure in a fluid-filled motor