Granted Patent
Utility
US 4,399,761 · App. 06/282,306
Resilient bobbin thread pull-off member for lockstitch sewing machine
Inventors:
Gerald J. Creed, Thaddeus J. Zylbert
Patented Case
View Patent ↗
Granted: Aug 23, 1983
Filed: Jul 13, 1981
Inventors
Gerald J. Creed
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.