Granted Patent
Utility
US 4,548,069 · App. 06/488,694
Pipe testing tool
Inventor:
Matthew J. A. Nousak
Patented Case
View Patent ↗
Granted: Oct 22, 1985
Filed: Apr 26, 1983
Inventor
Matthew J. A. Nousak
Assignee (at issue)
Damco Testers, 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.