Granted Patent
Utility
US 6,019,131 · App. 09/096,094
Tapered adjustable tailpiece
Inventor:
David C. Hall
Patented Case
View Patent ↗
Granted: Feb 1, 2000
Filed: Jun 11, 1998
Inventor
David C. Hall
Assignee (at issue)
Sloan Valve Company
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.