Granted Patent
Utility
US 4,909,800 · App. 07/223,964
Stepped needle
Inventor:
James R. Gross
Patented Case
View Patent ↗
Granted: Mar 20, 1990
Filed: Jul 25, 1988
Inventor
James R. Gross
Assignee (at issue)
The Kendall Company LP
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.