Inventor · disambiguated record
John L. Hartmann
Also filed as: HARTMANN JOHN L
4 granted patents·55 citations·filing 1991–1993
77Inventor score
Technology areasB21J
Files withELECTROIMPACT INC4
Top patents by PatentIndex Score
4 records- 0169US5280673AElectromagnetic bolt insertion systemELECTROIMPACT INC·Filed 1992·Granted Jan 25, 1994·27 cites·28 claims
- 0247US5437094AElectromagnetic bolt insertion and collar swaging systemELECTROIMPACT INC·Filed 1993·Granted Aug 1, 1995·11 cites·5 claims
- 0343US5201205ATwo axis tracer for fastener operationsELECTROIMPACT INC·Filed 1991·Granted Apr 13, 1993·10 cites·20 claims
- 0437US5279024AApparatus and method to prevent rivet shankingELECTROIMPACT INC·Filed 1993·Granted Jan 18, 1994·7 cites·13 claims
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