Granted Patent
Utility
US 4,486,940 · App. 06/442,540
Method of forming a sewing machine hook assembly
Inventors:
Giuseppe Valori, Marco Primati, Victor Stevens
Patented Case
View Patent ↗
Granted: Dec 11, 1984
Filed: Nov 18, 1982
Inventors
Giuseppe Valori
Marco Primati
Victor Stevens
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.