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John Benson
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Tigard, OR, US
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last 30 patents
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Patent Grant
Exhaust brake valve
Patent number
4,205,704
Issue date
Jun 3, 1980
Dana Corporation
John Benson
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Patent Grant
Exhaust brake valve
Patent number
4,054,156
Issue date
Oct 18, 1977
The Weatherhead Company
John Benson
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS