Granted Patent
Utility
US 4,486,923 · App. 06/071,474
Closure device for bags or pouches
Inventor:
Peter J. Briggs
Patented Case
View Patent ↗
Granted: Dec 11, 1984
Filed: Aug 31, 1979
Inventor
Peter J. Briggs
Assignee (at issue)
Matburn (Holdings) 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.