Granted Patent
Utility
US 4,644,612 · App. 06/868,975
Panel retainer
Inventor:
Robert Osterland
Patented Case
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Granted: Feb 24, 1987
Filed: May 30, 1986
Inventor
Robert Osterland
Assignee (at issue)
USM Holding AG
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.