Inventor
DIFFENDERFER HAROLD R
US5 patents
Patents
5 patentsUS4669737AJun 2, 1987
Annular shaft seal with cam portion on sealing lip
NEAPCO INC38 citations89
US4622840ANov 18, 1986
Method for drawing telescoping tubes for torque transmission
NEAPCO INC31 citations89
US4622022ANov 11, 1986
Telescoping tubes for torque transmission
NEAPCO INC39 citations89
US4568313AFeb 4, 1986
Protective guard for articulated shafting
NEAPCO INC22 citations78
US4154065AMay 15, 1979
Universal joint pivot assembly
NEAPCO INC11 citations71