Roger D. Sand

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Kokomo, IN, US

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Patents Grantslast 30 patents

Information Patent Grant
Internal combustion engine ignition spark timing system modulated b...
- Patent number 4,116,175
- Issue date Sep 26, 1978
- General Motors Corporation
- Roger D. Sand
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Internal combustion engine electronic ignition spark timing system...
- Patent number 4,054,111
- Issue date Oct 18, 1977
- General Motors Corporation
- Roger D. Sand
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS