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Brentwood Enterprises, Ltd.
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Burnaby, CA
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Patents Grants
last 30 patents
Information
Patent Grant
Drive system for railroad track vehicle
Patent number
4,977,796
Issue date
Dec 18, 1990
Brentwood Enterprises, Ltd.
Mark E. Littke
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Railroad track vehicle
Patent number
4,721,430
Issue date
Jan 26, 1988
Brentwood Enterprises Ltd.
Mark E. Littke
B61 - RAILWAYS
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last 30 patents
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