Inventor · disambiguated record

Harold A. Spencer, Iii

Also filed as: SPENCER III HAROLD A

1 granted patent·44 citations·filing 1990–1990

47Inventor score

Technology areasE21B

Files withBAKER HUGHES INC1

Top patents by PatentIndex Score

1 record

0159US4979568AAnnulus fluid pressure operated testing valveBAKER HUGHES INC·Filed 1990·Granted Dec 25, 1990·44 cites·10 claims

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