Granted Patent
Utility
US 4,417,469 · App. 06/277,744
Speed and timing angle measurement
Inventors:
Thomas T. Stevenson, Marios C. Zenios
Patented Case
View Patent ↗
Granted: Nov 29, 1983
Filed: Mar 3, 1981
Inventors
Thomas T. Stevenson
Marios C. Zenios
Assignee (at issue)
Caterpillar Tractor 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.