Granted Patent
Utility
US 4,799,713 · App. 07/156,988
Roof drain coupling
Inventor:
Katharine A. Uglow
Patented Case
View Patent ↗
Granted: Jan 24, 1989
Filed: Feb 18, 1988
Inventor
Katharine A. Uglow
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.