Granted Patent
Utility
US 4,376,589 · App. 06/284,687
Multi-ply unglued paper drive apparatus
Inventors:
Frank J. Avellanet, Robert L. Battey, Lloyd J. Burtrem
Patented Case
View Patent ↗
Granted: Mar 15, 1983
Filed: Jul 20, 1981
Inventors
Frank J. Avellanet
Robert L. Battey
Lloyd J. Burtrem
Assignee (at issue)
Burroughs, Inc.
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.