Granted Patent
Utility
US 4,523,498 · App. 06/463,189
Ergonomical in-line tool
Inventor:
Ivan B. Chapman, Jr.
Patented Case
View Patent ↗
Granted: Jun 18, 1985
Filed: Feb 2, 1983
Inventor
Ivan B. Chapman, Jr.
Assignee (at issue)
AT&T Technologies Incorporated
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.