Inventor · disambiguated record

David A. Hampel

Also filed as: HAMPEL DAVID A

3 granted patents·283 citations·filing 1981–1982

76Inventor score

Technology areasE02F Y10T

Files withESCO CORP3

Top patents by PatentIndex Score

3 records

0196US4335532AExcavating toothESCO CORP·Filed 1981·Granted Jun 22, 1982·138 cites·35 claims
0293US4404760AExcavating toothESCO CORP·Filed 1982·Granted Sep 20, 1983·143 cites·18 claims
0326US4454205AMethod of drill bit manufacture and productESCO CORP·Filed 1981·Granted Jun 12, 1984·2 cites·12 claims

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