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Jonathan L. Umsted
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Columbus, IN, US
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last 30 patents
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Patent Grant
Self-venting grommet for coil-on-plug
Patent number
5,944,002
Issue date
Aug 31, 1999
Cummins Engine Company, Inc.
Lawrence P. Tracy
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS