Granted Patent
Utility
US 5,267,359 · App. 07/970,598
Water turbulence generation in spas
Inventor:
Wilsey J. Clark
Patented Case
View Patent ↗
Granted: Dec 7, 1993
Filed: Oct 28, 1992
Inventor
Wilsey J. Clark
Assignee (at issue)
Clark Manufacturing, LLC
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.