Granted Patent
Utility
US 6,307,466 · App. 09/340,269
Two stage gauge with electrical signal output
Inventor:
Gregory Matthew Ferris
Patented Case
View Patent ↗
Granted: Oct 23, 2001
Filed: Jun 25, 1999
Inventor
Gregory Matthew Ferris
Assignee (at issue)
Engineered Products Company
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.