Granted Patent
Utility
US 6,227,808 · App. 09/354,932
Spa pressure sensing system capable of entrapment detection
Inventor:
William B. McDonough
Patented Case
View Patent ↗
Granted: May 8, 2001
Filed: Jul 15, 1999
Inventor
William B. McDonough
Assignee (at issue)
Hydroair a Unit of ITT Industries
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.