Granted Patent
Utility
US 4,817,010 · App. 07/020,690
Vending machine control with improved vendor selector switch detection and decoding apparatus
Inventor:
Bob M. Dobbins
Patented Case
View Patent ↗
Granted: Mar 28, 1989
Filed: Mar 2, 1987
Inventor
Bob M. Dobbins
Assignee (at issue)
Mars, Incorporated
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.