Granted Patent
Utility
US 4,991,272 · App. 07/230,309
Quick release buckle
Inventor:
John E. Bianchi
Patented Case
View Patent ↗
Granted: Feb 12, 1991
Filed: Aug 9, 1988
Inventor
John E. Bianchi
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.