Granted Patent
Utility
US 5,123,900 · App. 07/746,764
Moisture permeable double disk
Inventor:
John J. Wick
Patented Case
View Patent ↗
Granted: Jun 23, 1992
Filed: Aug 16, 1991
Inventor
John J. Wick
Assignee (at issue)
Bertek, Inc.
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.