Granted Patent
Utility
US 4,832,240 · App. 07/153,000
Needle threader with needle-holding notch
Inventor:
Emil J. Dalbo
Patented Case
View Patent ↗
Granted: May 23, 1989
Filed: Feb 8, 1988
Inventor
Emil J. Dalbo
Assignee (at issue)
Dal-Craft, Inc.
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.