Granted Patent
Utility
US 5,198,053 · App. 07/741,929
Method and apparatus for bonding polytetrafluoroethylene to a metal substrate and articles thereby produced
Inventor:
Eugene A. Duncan
Patented Case
View Patent ↗
Granted: Mar 30, 1993
Filed: Aug 8, 1991
Inventor
Eugene A. Duncan
Assignee (at issue)
Mather Seal Company
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.