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David J. Linberg
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Norristown, PA, US
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last 30 patents
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Patent Grant
Vehicle exhaust changeover apparatus
Patent number
6,158,213
Issue date
Dec 12, 2000
G. Douglas Linberg
B08 - CLEANING
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Patent Grant
Exhaust gas discharge apparatus
Patent number
5,391,110
Issue date
Feb 21, 1995
G. Douglas Linberg
B08 - CLEANING