Granted Patent
Utility
US 4,242,974 · App. 06/128,996
Pattern feed elongation in electronic sewing machine
Inventor:
Howard L. Beckerman
Patented Case
View Patent ↗
Granted: Jan 6, 1981
Filed: Mar 10, 1980
Inventor
Howard L. Beckerman
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.