Inventor · disambiguated record
Lester A. Amtsberg
Also filed as: AMTSBERG LESTER A
4 granted patents·55 citations·filing 1974–1977
77Inventor score
Files withCHICAGO PNEUMATIC TOOL CO4
Top patents by PatentIndex Score
4 records- 0165US3939670ARotatable drill string having a torsionally elastic shaft driving connection with rock bitCHICAGO PNEUMATIC TOOL CO·Filed 1974·Granted Feb 24, 1976·20 cites·2 claims
- 0256US4157121AHydraulic powered rock drillCHICAGO PNEUMATIC TOOL CO·Filed 1977·Granted Jun 5, 1979·16 cites·9 claims
- 0344US4072198AHydraulic rock drillCHICAGO PNEUMATIC TOOL CO·Filed 1976·Granted Feb 7, 1978·9 cites·18 claims
- 0437US3945442AHydraulic rock drill with stroke responsive advanceCHICAGO PNEUMATIC TOOL CO·Filed 1974·Granted Mar 23, 1976·10 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →