Granted Patent
Utility
US 4,765,485 · App. 07/053,756
Re-usable mailer package
Inventor:
William H. Perkins
Patented Case
View Patent ↗
Granted: Aug 23, 1988
Filed: May 26, 1987
Inventor
William H. Perkins
Assignee (at issue)
Reid Dominion Packaging Limited
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.