Granted Patent
Utility
US 6,142,186 · App. 08/784,049
Thread-forming pipe plug
Inventor:
Steven P. Donovan
Patented Case
View Patent ↗
Granted: Nov 7, 2000
Filed: Jan 17, 1997
Inventor
Steven P. Donovan
Assignee (at issue)
Textron 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.