Granted Patent
Utility
US 5,965,291 · App. 08/963,657
Perforated film for modifying the electrochemical surface area of a cell
Inventor:
Michael F. Pyszczek
Patented Case
View Patent ↗
Granted: Oct 12, 1999
Filed: Nov 3, 1997
Inventor
Michael F. Pyszczek
Assignee (at issue)
Wilson Greatbatch, Ltd.
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.