Granted Patent
Utility
US 4,744,682 · App. 07/062,922
Needle printing head
Inventor:
Per Ericsson
Patented Case
View Patent ↗
Granted: May 17, 1988
Filed: Jun 16, 1987
Inventor
Per Ericsson
Assignee (at issue)
U.S. Philips 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.