Granted Patent
Utility
US 4,555,997 · App. 06/615,013
Semi-automatic sewing machine control system
Inventor:
Tibor L. Tancs
Patented Case
View Patent ↗
Granted: Dec 3, 1985
Filed: May 29, 1984
Inventor
Tibor L. Tancs
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.