Granted Patent
Utility
US 4,835,031 · App. 07/166,991
Profiled strip with smooth reinforcing insert and method of its manufacture
Inventors:
Franz Schroder, Gerd Strutz
Patented Case
View Patent ↗
Granted: May 30, 1989
Filed: Mar 11, 1988
Inventors
Franz Schroder
Gerd Strutz
Assignee (at issue)
Gebr. Happich GmbH
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.