Granted Patent
Utility
US 5,047,739 · App. 07/377,854
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Inventor:
Lauri Kuokkanen
Patented Case
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Granted: Sep 10, 1991
Filed: Jun 12, 1989
Inventor
Lauri Kuokkanen
Assignee (at issue)
LK Products Oy
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.