Granted Patent
Utility
US 5,061,276 · App. 07/286,440
Multi-layered poly(tetrafluoroethylene)/elastomer materials useful for in vivo implantation
Inventors:
Roger Tu, Edwin Wang
Patented Case
View Patent ↗
Granted: Oct 29, 1991
Filed: Dec 19, 1988
Inventors
Roger Tu
Edwin Wang
Assignee (at issue)
Baxter International 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.