Granted Patent
Utility
US 6,497,402 · App. 09/822,574
Diffuser mounting system for aeration of liquids
Inventor:
Charles E. Tharp
Patented Case
View Patent ↗
Granted: Dec 24, 2002
Filed: Mar 30, 2001
Inventor
Charles E. Tharp
Assignee (at issue)
Environmental Dynamics, Inc.
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.