Granted Patent
Utility
US 4,966,960 · App. 07/266,878
High temperature release sheet for printed circuit boards
Inventors:
Peter Sipos, Erica M. Besso
Patented Case
View Patent ↗
Granted: Oct 30, 1990
Filed: Nov 2, 1988
Inventors
Peter Sipos
Erica M. Besso
Assignee (at issue)
DuPont Canada 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.