Granted Patent
Utility
US 4,245,505 · App. 06/061,750
Indicator of amount of liquefied gas in bottle
Inventor:
William R. Baynes
Patented Case
View Patent ↗
Granted: Jan 20, 1981
Filed: Jul 30, 1979
Inventor
William R. Baynes
Assignee (at issue)
Turco Manufacturing Co.
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.