Granted Patent
Utility
US 4,951,501 · App. 07/421,959
Tire valve having dual electric conducting paths
Inventors:
Milton B. MacAnally, Carl G. A. Ruf
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Oct 16, 1989
Inventors
Milton B. MacAnally
Carl G. A. Ruf
Assignee (at issue)
Schrader Automotive 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.