Inventor
GRAYBEAL HAROLD N
US3 patents
Patents
3 patentsUS5601896AFeb 11, 1997
Fabric-covered board structure and process of manufacture
ARMSTRONG WORLD IND INC8 citations71
US4761306AAug 2, 1988
Method of making a positioned chip surface covering
ARMSTRONG WORLD IND INC5 citations59
US4414915ANov 15, 1983
Rotary screen squeegee rod
ARMSTRONG WORLD IND INC5 citations56