Inventor · disambiguated record
Jeffrey W. Hamner
Also filed as: HAMNER JEFFREY W
4 granted patents·63 citations·filing 1989–2004
75Inventor score
Technology areasE21B
Top patents by PatentIndex Score
4 records- 0163US7347285B2Drilling machine having a movable rod handling device and a method for moving the rod handling deviceATLAS COPCO DRILLING SOLUTIONS·Filed 2004·Granted Mar 25, 2008·31 cites·35 claims
- 0243US4953639AClosed loop hydraulic drill feed systemINGERSOLL RAND CO·Filed 1989·Granted Sep 4, 1990·16 cites·8 claims
- 0338US5168937ADrill feed control utilizing a variable overcenter valveINGERSOLL RAND CO·Filed 1991·Granted Dec 8, 1992·16 cites·7 claims
- 0425US5033266AOvercenter valve control system and method for drillingINGERSOLL RAND CO·Filed 1989·Granted Jul 23, 1991·0 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →