05091713 is referenced by 458 patents and cites 8 patents.

A monitoring system for monitoring a vending machine at a remote location, the monitoring system including an inventory sensing system for providing a continuous update of the inventory in the vending machine, an alarm system to signal when the vending machine is being damaged or the systems in the vending machine are in need of attention, a communication system, and a credit card verification system. The vending machine is coupled to a central computer system which monitors all the systems in the vending machine. The communication system includes a credit card verification system, a two-way communication capability, a display screen, and a printer.

Title
Inventory, cash, security, and maintenance control apparatus and method for a plurality of remote vending machines
Application Number
7/521605
Publication Number
5091713
Application Date
May 10, 1990
Publication Date
February 25, 1992
Inventor
David C Anderson
Deer Valley
UT, US
Ralph J Henderson
Salt Lake City
UT, US
Arthur H Horne
Salt Lake City
UT, US
Agent
J Winslow Young
Assignee
Universal Automated Systems
UT, US
IPC
G06F 7/08
G08B 13/00
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