04593376 is referenced by 305 patents and cites 24 patents.

A vending machine stores a plurality of video game programs which may be selected for purchase. The game program is transferred to a programmable cartridge which the user inserts into the machine. The programmable cartridge is then removed for use on a separate video game unit. The programmable cartridge includes a use interval circuit which is preset by the vending machine to expire after a time interval. When expired, the transferred program is rendered inoperable.

Title
System for vending program cartridges which have circuitry for inhibiting program usage after preset time interval expires
Application Number
6/487018
Publication Number
4593376
Application Date
April 21, 1983
Publication Date
June 3, 1986
Inventor
Larry N Volk
3320 Royce Ct., Las Vegas
NV, US
Agent
Barry E Sammons
IPC
G06F 15/44
G06F 13/00
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