Granted Patent
Utility
US 6,155,751 · App. 08/989,186
Flow development chamber for creating a vortex flow and a laminar flow
Inventors:
Darin L. Lane, Walter D. Prince
Patented Case
View Patent ↗
Granted: Dec 5, 2000
Filed: Dec 11, 1997
Inventors
Darin L. Lane
Walter D. Prince
Assignee (at issue)
Ecotech Systems International, Ltd.
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.