Inventor · disambiguated record

Lewis W. Hake

Also filed as: HAKE LEWIS W

2 granted patents·114 citations·filing 1979–1982

66Inventor score

Technology areasE21B H01H

Files withPETROLEUM CONCEPTS INC1 US ENERGY1

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2 records

0185US4478298ADrill bit stud and method of manufacturePETROLEUM CONCEPTS INC·Filed 1982·Granted Oct 23, 1984·105 cites·9 claims
0253US4345124AAcceleration switchUS ENERGY·Filed 1979·Granted Aug 17, 1982·9 cites·5 claims

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