Granted Patent
Utility
US 4,185,575 · App. 06/016,056
Ramp speed integrated motor controller for sewing machines
Inventors:
Jack Brown, John A. Herr, Wesley R. Peterson, John W. Wurst
Patented Case
View Patent ↗
Granted: Jan 29, 1980
Filed: Feb 28, 1979
Inventors
Jack Brown
John A. Herr
Wesley R. Peterson
John W. Wurst
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.