Inventor
HOFFMAN JOHN A
US10 patents
⚠️ This page may combine multiple inventors who share the name “HOFFMAN JOHN A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
THETFORD CORP
8 patentsUS5875499AMar 2, 1999
Recreational vehicle toilet with flush nozzle deflector shield
THETFORD CORP31 citations92
US4217668AAug 19, 1980
Portable toilet
THETFORD CORP24 citations81
USD262051SNov 24, 1981
Portable toilet
THETFORD CORP9 citations73
USD257385SOct 14, 1980
Toilet
THETFORD CORP11 citations73
US4180876AJan 1, 1980
Portable toilets
THETFORD CORP19 citations73
US5318275AJun 7, 1994
Portable waste holding tank with improved inlet valve assembly
THETFORD CORP15 citations72
US4769860ASep 13, 1988
Portable toilet holding tank spout
THETFORD CORP10 citations72
US4641383AFeb 10, 1987
Portable toilet holding tank spout
THETFORD CORP14 citations72