Inventor · disambiguated record
Harold N. Graybeal
Also filed as: GRAYBEAL HAROLD N
3 granted patents·18 citations·filing 1982–1993
67Inventor score
Files withARMSTRONG WORLD IND INC3
Top patents by PatentIndex Score
3 records- 0135US4761306AMethod of making a positioned chip surface coveringARMSTRONG WORLD IND INC·Filed 1984·Granted Aug 2, 1988·5 cites·1 claims
- 0234US5601896AFabric-covered board structure and process of manufactureARMSTRONG WORLD IND INC·Filed 1993·Granted Feb 11, 1997·8 cites·2 claims
- 0331US4414915ARotary screen squeegee rodARMSTRONG WORLD IND INC·Filed 1982·Granted Nov 15, 1983·5 cites·2 claims
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