Granted Patent
Utility
US 5,115,554 · App. 07/629,928
Closet flange
Inventor:
Donnie R. Fell, Sr.
Patented Case
View Patent ↗
Granted: May 26, 1992
Filed: Dec 19, 1990
Inventor
Donnie R. Fell, Sr.
Assignees (at issue)
James L. Holman
Donnie R. Fell, Sr.
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.