Granted Patent
Utility
US 4,800,485 · App. 06/875,246
On-line documentation facility
Inventors:
John M. Ackroff, Michael J. Heffler, John Mitchell
Patented Case
View Patent ↗
Granted: Jan 24, 1989
Filed: Jun 16, 1986
Inventors
John M. Ackroff
Michael J. Heffler
John Mitchell
Assignees (at issue)
American Telephone and Telegraph, Co.
Bell Telephone Laboratories, 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.