Granted Patent
Utility
US 5,676,404 · App. 08/598,602
Low profile flanged tee
Inventor:
David E. Sisk
Patented Case
View Patent ↗
Granted: Oct 14, 1997
Filed: Feb 12, 1996
Inventor
David E. Sisk
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.