IP Library › Granted Patent US 4,809,463
Granted Patent Utility
US 4,809,463 · App. 07/166,704

Window frame with reinforced sealing strips

Inventors: Franz Schroder, Ludger Buller, Ludger Hemmis
Patented Case View Patent ↗
Granted: Mar 7, 1989 Filed: Mar 11, 1988
Inventors
Franz Schroder
Ludger Buller
Ludger Hemmis
Assignee (at issue)
Gebr. Happich GmbH

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Quick Facts
Patent No.
US 4,809,463
App. No.
07/166,704
Filed
1988-03-11
Granted
1989-03-07
Kind
A