Inventor · disambiguated record
Abraham Gien
Also filed as: GIEN ABRAHAM
5 granted patents·44 citations·filing 1975–1991
79Inventor score
Technology areasE21B
Top patents by PatentIndex Score
5 records- 0148US3970153APneumatic percussion machinesGIEN ABRAHAM·Filed 1975·Granted Jul 20, 1976·16 cites·5 claims
- 0232US4753302AValveless pneumatic hammerGIEN ABRAHAM·Filed 1986·Granted Jun 28, 1988·8 cites·16 claims
- 0332US4094366APneumatic percussion machinesGIEN ABRAHAM·Filed 1976·Granted Jun 13, 1978·6 cites·5 claims
- 0429US5080179ADown the hole hammer equipmentP G DRILLING EQUIPMENT & ACCES·Filed 1990·Granted Jan 14, 1992·10 cites·20 claims
- 0527US5065823AExtraction device for pneumatically actuated drilling toolsGIEN ABRAHAM·Filed 1991·Granted Nov 19, 1991·4 cites·21 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →