Granted Patent
Utility
US 4,499,839 · App. 06/558,082
Reverse feed controlling mechanism for a sewing machine
Inventors:
John Cain Blackwood, Thomas Graham, Robert B. Brauch
Patented Case
View Patent ↗
Granted: Feb 19, 1985
Filed: Dec 3, 1983
Inventors
John Cain Blackwood
Thomas Graham
Robert B. Brauch
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.