Granted Patent
Utility
US 6,812,708 · App. 10/454,987
Combustible-gas measuring instrument
Inventor:
L. Rodney Bristol
Patented Case
View Patent ↗
Granted: Nov 2, 2004
Filed: Jun 4, 2003
Inventor
L. Rodney Bristol
Assignee (at issue)
Scott Technologies, 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.