Granted Patent
Utility
US 4,713,617 · App. 06/857,359
Digital timing light
Inventor:
Steven E. Michalski
Patented Case
View Patent ↗
Granted: Dec 15, 1987
Filed: Apr 30, 1986
Inventor
Steven E. Michalski
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.