Inventor

PETERSON RALPH E

4 patents

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

PARKER HANNIFIN CORP

1 patent

US4328972AMay 11, 1982

Seal ring and method of manufacture

PARKER HANNIFIN CORP65 citations93

MINNESOTA MINING & MFG

1 patent

US6007971ADec 28, 1999

Apparatus, system, and method for processing photothermographic elements

MINNESOTA MINING & MFG48 citations87

WILSON SPORTING GOODS

1 patent

US7067081B2Jun 27, 2006

Method of making a golf ball product from fast-curling reaction injection molded polyurethane

WILSON SPORTING GOODS11 citations78

PETERSON RALPH E

1 patent

USD256522SAug 26, 1980

Carrying case for chess articles or the like

PETERSON RALPH E24 citations75