Granted Patent
Utility
US 4,652,013 · App. 06/817,539
Book hanger hardware
Inventor:
Robert N. Azzato
Patented Case
View Patent ↗
Granted: Mar 24, 1987
Filed: Jan 10, 1986
Inventor
Robert N. Azzato
Assignee (at issue)
General Binding Corporation
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.