Covington Brothers, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4336676 Composite structural panel with offset coreExpiredMar 26, 79Jun 29, 82[E04C]
4291732 Method and apparatus for manufacture of wire truss and sinuous strut thereforExpiredFeb 26, 79Sep 29, 81[B21F]

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