Granted Patent
Utility
US 4,830,643 · App. 07/218,779
Expanded polytetrafluoroethylene tubular container
Inventors:
Robert L. Sassa, Christian Bailey
Patented Case
View Patent ↗
Granted: May 16, 1989
Filed: Jul 13, 1988
Inventors
Robert L. Sassa
Christian Bailey
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.