Granted Patent
Utility
US 4,242,975 · App. 06/114,165
Needle support means
Inventors:
Warren D. Knowles, Lionel J. Coulombe
Patented Case
View Patent ↗
Granted: Jan 6, 1981
Filed: Jan 22, 1980
Inventors
Warren D. Knowles
Lionel J. Coulombe
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.