Granted Patent
Utility
US 4,386,573 · App. 06/435,531
Embroidery attachment for electronic sewing machine
Inventors:
Donald R. Davidson, Gerhard Reinert
Patented Case
View Patent ↗
Granted: Jun 7, 1983
Filed: Oct 20, 1982
Inventors
Donald R. Davidson
Gerhard Reinert
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.