Granted Patent
Utility
US 5,271,561 · App. 07/907,708
Rotary jet hydrotherapy device and method
Inventors:
Samuel Tobias, Robert M. Messinger, Donald R. Davidson
Patented Case
View Patent ↗
Granted: Dec 21, 1993
Filed: Jul 2, 1992
Inventors
Samuel Tobias
Robert M. Messinger
Donald R. Davidson
Assignee (at issue)
Hayward Industries, 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.