P

Inventor

SEMMERLING RALPH P

US6 patents
⚠️ This page may combine multiple inventors who share the name “SEMMERLING RALPH P”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

UNITED STATES GYPSUM CO

4 patents
US4464074AAug 7, 1984

Connector and web stiffener

UNITED STATES GYPSUM CO85 citations95
US3998419ADec 21, 1976

Swivel type hanger bracket

UNITED STATES GYPSUM CO69 citations94
US4608801ASep 2, 1986

Floor bracing member for a ceramic tile floor

UNITED STATES GYPSUM CO37 citations92
US3973302AAug 10, 1976

Clip for attaching header to I-beam

UNITED STATES GYPSUM CO4 citations60

GREEN WILLIAM J

1 patent
US4730424AMar 15, 1988

Rooftop walkway

GREEN WILLIAM J14 citations72

USG IND INC

1 patent
US4689927ASep 1, 1987

Walkway for a sloping rooftop

USG IND INC9 citations72