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Bruce F. Douglas
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Kennebuck, ME, US
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last 30 patents
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Patent Grant
Method and apparatus for fabricating roofing crickets
Patent number
5,663,882
Issue date
Sep 2, 1997
NRG Barriers, Inc.
Bruce F. Douglas
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Patent Grant
Method and apparatus for making foam product with venting channels...
Patent number
5,453,231
Issue date
Sep 26, 1995
NRG Barriers, Inc.
Bruce F. Douglas
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL