Granted Patent
Utility
US 4,433,761 · App. 06/343,252
Portfolio with frame and integral article retainers
Inventors:
Roger D. Winter, David E. Workman, Mark Nordstrom
Patented Case
View Patent ↗
Granted: Feb 28, 1984
Filed: Jan 27, 1982
Inventors
Roger D. Winter
David E. Workman
Mark Nordstrom
Assignee (at issue)
Samsonite 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.