Granted Patent
Utility
US 4,332,489 · App. 06/209,364
Print hammer actuating device
Inventor:
William L. Dollenmayer
Patented Case
View Patent ↗
Granted: Jun 1, 1982
Filed: Nov 24, 1980
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.