P

Inventor

RUCH DAVID E

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

ARMSTRONG WORLD IND INC

3 patents
US5188874AFeb 23, 1993

Hybrid floor covering

ARMSTRONG WORLD IND INC22 citations91
US5080944AJan 14, 1992

Hybrid floor covering

ARMSTRONG WORLD IND INC47 citations91
US5082708AJan 21, 1992

Tension floor covering with reinforcing layer

ARMSTRONG WORLD IND INC19 citations81

GEN MOTORS CORP

1 patent
US3988660AOct 26, 1976

Circuit for rectifying a three-phase alternating signal

GEN MOTORS CORP6 citations52