Granted Patent
Utility
US 4,441,021 · App. 06/285,942
Luminosity probe for diesel engine timing apparatus
Inventors:
Gene E. Olson, Jerome A. Thompson, Donald D. Grover, Christopher B. Stout, Thomas P. Becker
Patented Case
View Patent ↗
Granted: Apr 3, 1984
Filed: Jul 23, 1981
Inventors
Gene E. Olson
Jerome A. Thompson
Donald D. Grover
Christopher B. Stout
Thomas P. Becker
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.