Granted Patent
Utility
US 4,718,657 · App. 06/675,912
Paper stacker
Inventors:
Brian D. Otter, Manuel Dias
Patented Case
View Patent ↗
Granted: Jan 12, 1988
Filed: Nov 28, 1984
Inventors
Brian D. Otter
Manuel Dias
Assignee (at issue)
Delphax Systems
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.