Assignee
CHRISTENSEN DIAMOND PROD CO
3 granted patents·164 citations·filing 1974–1975
Top patents by PatentIndex Score
3 records- 0188US3938853AShrink-fit sleeve apparatus for drill stringsCHRISTENSEN DIAMOND PROD CO·Filed 1974·Granted Feb 17, 1976·68 cites·39 claims
- 0283US3993368ATool joint wear protectorsCHRISTENSEN DIAMOND PROD CO·Filed 1975·Granted Nov 23, 1976·32 cites·26 claims
- 0381US3945446AStabilizer for drill stringsCHRISTENSEN DIAMOND PROD CO·Filed 1974·Granted Mar 23, 1976·64 cites·11 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →