Granted Patent
Utility
US 4,559,031 · App. 06/725,530
Passive paper stacker
Inventors:
Peter Gysling, Sohrab Vossoughi
Patented Case
View Patent ↗
Granted: Dec 17, 1985
Filed: Apr 23, 1985
Inventors
Peter Gysling
Sohrab Vossoughi
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.