Granted Patent
Utility
US 4,533,476 · App. 06/614,127
Spa filter installation method and means
Inventor:
Jonathan Watkins
Patented Case
View Patent ↗
Granted: Aug 6, 1985
Filed: May 25, 1984
Inventor
Jonathan Watkins
Assignee (at issue)
WATKINS MANUFACTURING CORPORATION
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.