Granted Patent
Utility
US 6,053,197 · App. 09/051,976
Horizontal-flow oil-sealant-preserving drain odor trap
Inventor:
Ditmar L. Gorges
Patented Case
View Patent ↗
Granted: Apr 25, 2000
Filed: Sep 14, 1998
Inventor
Ditmar L. Gorges
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.