Granted Patent
Utility
US 5,545,334 · App. 08/395,082
Method for sealing a traveling bridge filter backwash shoe
Inventor:
Mack McDougald
Patented Case
View Patent ↗
Granted: Aug 13, 1996
Filed: Feb 27, 1995
Inventor
Mack McDougald
Assignee (at issue)
Davis Water & Waste 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.