Granted Patent
Utility
US 4,275,939 · App. 05/935,228
Sewing machine positioning pin
Inventor:
Charles R. Odermann
Patented Case
View Patent ↗
Granted: Jun 30, 1981
Filed: Aug 21, 1978
Inventor
Charles R. Odermann
Assignee (at issue)
The Singer Company Limited
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.