Granted Patent
Utility
US 3,941,226 · App. 05/453,686
Electronic coin switch
Inventor:
Russell J. Drakes
Patented Case
View Patent ↗
Granted: Mar 2, 1976
Filed: Mar 22, 1974
Inventor
Russell J. Drakes
Assignee (at issue)
The Wurlitzer 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.