All Patents in class 277/409


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