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Richard W Vehar
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Sewickley, PA, US
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Patents Grants
last 30 patents
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Patent Grant
Method and system providing sleep and wake-up modes for railway tra...
Patent number
7,464,904
Issue date
Dec 16, 2008
Union Switch & Signal, Inc.
Richard W. Vehar
B61 - RAILWAYS
Patents Applications
last 30 patents
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Patent Application
Method and system providing sleep and wake-up modes for railway tra...
Publication number
20060249631
Publication date
Nov 9, 2006
Richard W Vehar
B61 - RAILWAYS