Inventor

RISTERS FRANK

DE4 patents

⚠️ This page may combine multiple inventors who share the name “RISTERS FRANK”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HEGENSCHEIDT MFD GMBH & CO KG

2 patents

US7493788B2Feb 24, 2009

Deep rolling roller head for split-pin crankshafts

HEGENSCHEIDT MFD GMBH & CO KG4 citations56

US7779660B2Aug 24, 2010

Procedure for deep rolling crankshafts

HEGENSCHEIDT MFD GMBH & CO KG0 citations42

HEGENSCHEIDT MFD GM H & CO KG

1 patent

US6389861B1May 21, 2002

Roller cage

HEGENSCHEIDT MFD GM H & CO KG3 citations49

HEFFE ROLAND

1 patent

US8245374B2Aug 21, 2012

Roller burnishing machine for crankshafts

HEFFE ROLAND0 citations32