Granted Patent
Utility
US 5,010,796 · App. 07/472,714
Helical split ring french fry and apparatus for making the same
Inventor:
George A. Mendenhall
Patented Case
View Patent ↗
Granted: Apr 30, 1991
Filed: Jan 31, 1990
Inventor
George A. Mendenhall
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.