Granted Patent
Utility
US 4,593,420 · App. 06/786,809
Self-draining hydromassage fitting
Inventors:
Samuel Tobias, Robert M. Messinger
Patented Case
View Patent ↗
Granted: Jun 10, 1986
Filed: Oct 11, 1985
Inventors
Samuel Tobias
Robert M. Messinger
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.