Granted Patent
Utility
US 4,427,312 · App. 06/415,859
Printwheel detent
Inventor:
William L. Dollenmayer
Patented Case
View Patent ↗
Granted: Jan 24, 1984
Filed: Sep 8, 1982
Inventor
William L. Dollenmayer
Assignee (at issue)
International Business Machines 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.