Granted Patent
Utility
US 4,629,557 · App. 06/755,476
Pump test ring, cover and strainer and method of providing a pressure-testable pump
Inventor:
Samuel Tobias
Patented Case
View Patent ↗
Granted: Dec 16, 1986
Filed: Jul 16, 1985
Inventor
Samuel Tobias
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.