Granted Patent
Utility
US 6,357,952 · App. 09/289,075
Two-up loose-leaf binder covers
Inventor:
Richard K. McKeown
Patented Case
View Patent ↗
Granted: Mar 19, 2002
Filed: Apr 8, 1999
Inventor
Richard K. McKeown
Assignee (at issue)
CRAWFORD INDUSTRIES LLC
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.