Granted Patent
Utility
US 4,071,389 · App. 05/653,435
Cylinder-making apparatus and method
Inventor:
Frank E. Ives
Patented Case
View Patent ↗
Granted: Jan 31, 1978
Filed: Jan 29, 1976
Inventor
Frank E. Ives
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.