Inventor
CHAPMAN ROBERT M
US10 patents
⚠️ This page may combine multiple inventors who share the name “CHAPMAN ROBERT M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NAT GYPSUM CO
8 patentsUS4704837ANov 10, 1987
Wall construction
NAT GYPSUM CO90 citations95
US4907773AMar 13, 1990
Adjustable mounting surface
NAT GYPSUM CO28 citations92
US5042213AAug 27, 1991
Channel utility notch
NAT GYPSUM CO9 citations73
US4843771AJul 4, 1989
Wall trim member
NAT GYPSUM CO16 citations73
US4843784AJul 4, 1989
Integral wallboard and stud
NAT GYPSUM CO8 citations73
US4700515AOct 20, 1987
Wall panel leveling support clip
NAT GYPSUM CO13 citations73
US5107651AApr 28, 1992
Method of mounting wallboard
NAT GYPSUM CO12 citations72
US5058355AOct 22, 1991
Panels with laminated strips for clips
NAT GYPSUM CO16 citations72