Granted Patent
Utility
US 4,780,021 · App. 07/037,894
Exodermic deck conversion method
Inventor:
Neal H. Bettigole
Patented Case
View Patent ↗
Granted: Oct 25, 1988
Filed: Apr 13, 1987
Inventor
Neal H. Bettigole
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.