Granted Patent
Utility
US 4,404,985 · App. 06/309,741
Air-liquid valves for off-the-road vehicle tires
Inventor:
Carl Stasiunas
Patented Case
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Granted: Sep 20, 1983
Filed: Oct 8, 1981
Inventor
Carl Stasiunas
Assignee (at issue)
National Distillers and Chemical Corporation
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.