Inventor · disambiguated record
Roger D. Sand
Also filed as: SAND ROGER D
3 granted patents·49 citations·filing 1976–1978
72Inventor score
Files withGEN MOTORS CORP3
Top patents by PatentIndex Score
3 records- 0178US4054111AInternal combustion engine electronic ignition spark timing system modulated by cylinder combustion pressureGEN MOTORS CORP·Filed 1976·Granted Oct 18, 1977·18 cites·5 claims
- 0264US4116175AInternal combustion engine ignition spark timing system modulated by cylinder combustion pressureGEN MOTORS CORP·Filed 1976·Granted Sep 26, 1978·23 cites·5 claims
- 0337US4198637AControl for an electric motor-driven telescoping radio antennaGEN MOTORS CORP·Filed 1978·Granted Apr 15, 1980·8 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →