Granted Patent
Utility
US 4,168,909 · App. 05/850,244
Optical toe gauge with angled screens for vehicle wheels
Inventors:
Raymond G. Knudsen, deceased, James W. Nelson
Patented Case
View Patent ↗
Granted: Sep 25, 1979
Filed: Nov 10, 1977
Inventors
Raymond G. Knudsen, deceased
James W. Nelson
Assignee (at issue)
Snap-on Tools Company
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.