Inventor · disambiguated record

Francis Y. Willingham

Also filed as: WILLINGHAM FRANCIS Y

1 granted patent·6 citations·filing 1981–1981

28Inventor score

Technology areasC04B

Files withMANVILLE SERVICE CORP1

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1 record

0129US4354878AMineral article such as thermal insulation containing visual identification meansMANVILLE SERVICE CORP·Filed 1981·Granted Oct 19, 1982·6 cites·4 claims

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