Granted Patent
Utility
US 6,290,421 · App. 09/506,394
Binder with spine window and removable insert therein
Inventor:
Stephen R. Welch
Patented Case
View Patent ↗
Granted: Sep 18, 2001
Filed: Feb 18, 2000
Inventor
Stephen R. Welch
Assignee (at issue)
ACCO Brand, Inc.
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.