Granted Patent
Utility
US 4,675,345 · App. 06/885,978
Foamable polyvinylidene fluoride and methods
Inventor:
Roger L. Pecsok
Patented Case
View Patent ↗
Granted: Jun 23, 1987
Filed: Jul 15, 1986
Inventor
Roger L. Pecsok
Assignee (at issue)
Penwalt Corporation
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.