Granted Patent
Utility
US 4,872,620 · App. 07/145,528
Bobbin blow out plug
Inventor:
Don Brown
Patented Case
View Patent ↗
Granted: Oct 10, 1989
Filed: Jan 18, 1988
Inventor
Don Brown
Assignee (at issue)
Burlington Industries LLC
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.