Granted Patent
Utility
US 4,598,753 · App. 06/658,726
Method for pressing finless sewing machine needles
Inventor:
Thaddeus J. Zylbert
Patented Case
View Patent ↗
Granted: Jul 8, 1986
Filed: Oct 9, 1984
Inventor
Thaddeus J. Zylbert
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.