Granted Patent
Utility
US 4,186,673 · App. 05/952,901
Material feed mechanism for sewing machines
Inventor:
Artin G. Vartoukian
Patented Case
View Patent ↗
Granted: Feb 5, 1980
Filed: Oct 19, 1978
Inventor
Artin G. Vartoukian
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.