Inventor
HIMMELBERGER KARL B
US5 patents
⚠️ This page may combine multiple inventors who share the name “HIMMELBERGER KARL B”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ARMSTRONG WORLD IND INC
4 patentsUS4585685AApr 29, 1986
Acoustically porous building materials
ARMSTRONG WORLD IND INC146 citations97
US4646955AMar 3, 1987
Method for segmenting building boards and apparatus therefor
ARMSTRONG WORLD IND INC8 citations71
US4815644AMar 28, 1989
Apparatus for segmenting building boards
ARMSTRONG WORLD IND INC6 citations60
US4742945AMay 10, 1988
Method for segmenting building boards and apparatus therefor
ARMSTRONG WORLD IND INC2 citations60