All Patents in class 277/409


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All Patents in class 277/409
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	525,443	Sep. 04, 1894	P.W. Gates, E.E. Hanna, C.L. Carman	Gyrating crusher
	3,190,661	Jun. 22, 1965	R.H. Andresen, G. Schultz, E.C. Wahl	Vented Seal With Stationary Spaced Sealing Members