Granted Patent
Utility
US 4,411,210 · App. 06/331,699
Actuating mechanism for a double pointed looper in a sewing machine
Inventor:
Karl H. Killinger
Patented Case
View Patent ↗
Granted: Oct 25, 1983
Filed: Dec 17, 1981
Inventor
Karl H. Killinger
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.