P

Inventor

STEFFENS JOHN

US4 patents
⚠️ This page may combine multiple inventors who share the name “STEFFENS JOHN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ILLINOIS TOOL WORKS

1 patent

LANAHAN MICHAEL B

1 patent

CARTER ROYSTON E

1 patent

STEFFENS JOHN

1 patent