Granted Patent
Utility
US 4,313,394 · App. 06/132,042
Printing apparatus
Inventors:
Steven F. North, Robert B. Sprow
Patented Case
View Patent ↗
Granted: Feb 2, 1982
Filed: Mar 20, 1980
Inventors
Steven F. North
Robert B. Sprow
Assignee (at issue)
Western Electric Company, 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.