Granted Patent
Utility
US 4,248,167 · App. 06/051,334
Safety system to protect sewing machine needles
Inventor:
Gerhard Reinert
Patented Case
View Patent ↗
Granted: Feb 3, 1981
Filed: Jun 22, 1979
Inventor
Gerhard Reinert
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.