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Joseph Karpen
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Weaverville, NC, US
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last 30 patents
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Patent Grant
Self anchoring fire resistant two piece non-operable window frame a...
Patent number
5,711,120
Issue date
Jan 27, 1998
Karpen Steel Products, Inc.
Joseph Karpen
E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS