Assignee
SHAFCO IND INC
US·4 granted patents·203 citations·filing 1977–1982
Top patents by PatentIndex Score
4 records- 0186US4154302ACable feed-through method and apparatus for well head constructionsSHAFCO IND INC·Filed 1977·Granted May 15, 1979·107 cites·11 claims
- 0283US4467823AHigh pressure ball valveSHAFCO IND INC·Filed 1981·Granted Aug 28, 1984·48 cites·15 claims
- 0379US4188860ALocking mechanismSHAFCO IND INC·Filed 1978·Granted Feb 19, 1980·26 cites·11 claims
- 0458US4523608ARotary ball valve assemblySHAFCO IND INC·Filed 1982·Granted Jun 18, 1985·22 cites·2 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →