Granted Patent
Utility
US 4,240,368 · App. 06/130,792
Motorized drive for a sewing machine including belt tensioning means
Inventor:
Kenneth D. Adams
Patented Case
View Patent ↗
Granted: Dec 23, 1980
Filed: Mar 17, 1980
Inventor
Kenneth D. Adams
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.