Granted Patent
Utility
US 5,100,253 · App. 07/709,727
Concealed rivet element and setting method for binder and the like
Inventor:
Edward W. Cooper
Patented Case
View Patent ↗
Granted: Mar 31, 1992
Filed: Jun 3, 1991
Inventor
Edward W. Cooper
Assignee (at issue)
Acco World 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.