Granted Patent
Utility
US 3,956,740 · App. 05/528,441
Portable data entry apparatus
Inventors:
Michael Jones, David A. Johnson, Carl T. Wright, William Sherman Bell, Jr.
Patented Case
View Patent ↗
Granted: May 11, 1976
Filed: Nov 29, 1974
Inventors
Michael Jones
David A. Johnson
Carl T. Wright
William Sherman Bell, Jr.
Assignee (at issue)
TELXON 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.