Granted Patent
Utility
US 6,129,121 · App. 09/181,364
Pipe nipple
Inventor:
Michael R. Kohle
Patented Case
View Patent ↗
Granted: Oct 10, 2000
Filed: Oct 28, 1998
Inventor
Michael R. Kohle
Assignee (at issue)
ZURN 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.