Granted Patent
Utility
US 5,019,140 · App. 07/287,811
Irradiated expanded polytetrafluoroethylene composites, and devices using them, and processes for making them
Inventors:
John Bowser, Christopher T. Hyde
Patented Case
View Patent ↗
Granted: May 28, 1991
Filed: Dec 21, 1988
Inventors
John Bowser
Christopher T. Hyde
Assignee (at issue)
W. L. Gore & Associates, 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.