Granted Patent
Utility
US 4,117,791 · App. 05/860,343
Dual color coded sewing machine needles
Inventors:
Wayne A. Current, Bruce I. Genge, Herbert J. Hurme, Josef Zocher
Patented Case
View Patent ↗
Granted: Oct 3, 1978
Filed: Dec 14, 1977
Inventors
Wayne A. Current
Bruce I. Genge
Herbert J. Hurme
Josef Zocher
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.