Granted Patent
Utility
US 4,485,755 · App. 06/562,317
Thread cutter in sewing machine face plate
Inventors:
Walter H. W. Marsh, Kenneth D. Adams
Patented Case
View Patent ↗
Granted: Dec 4, 1984
Filed: Dec 16, 1983
Inventors
Walter H. W. Marsh
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.