Granted Patent
Utility
US 5,018,409 · App. 07/592,666
Tear top can opener
Inventor:
John A. Bittel, Sr.
Patented Case
View Patent ↗
Granted: May 28, 1991
Filed: Oct 4, 1990
Inventor
John A. Bittel, Sr.
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.