Granted Patent
Utility
US 6,446,935 · App. 09/661,476
Valve device with elevated mounting pads
Inventor:
Alexander Winkler
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Sep 14, 2000
Inventor
Alexander Winkler
Assignee (at issue)
Sharon Piping & Equipment, 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.