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James J. Nowacek
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San Antonio, TX, US
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last 30 patents
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Patent Grant
Slate and interlayment roof and a method of preparing the same
Patent number
6,516,572
Issue date
Feb 11, 2003
David C. Nowacek
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
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Patent Grant
Slate and interlayment roof and a method of preparing the same
Patent number
6,148,578
Issue date
Nov 21, 2000
David C. Nowacek
E04 - BUILDING