Programmable cartridge telephone communication system

Details Programmable cartridge telephone communication system Programmable cartridge telephone communication system

1982-12-01

1985-03-19

Zache, Raulfe B.

Boots, shoes, and leggings

179 18ES, G06F 100

Patent

active

045063460

ABSTRACT:
A cartridge comprising circuitry and program instructions is added to a processor controlled telephone communication system to selectively change the operating system in accordance with the cartridge used.

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patent: 4384328 (1983-05-01), Watson et al.
patent: 4412282 (1983-10-01), Holden
patent: 4456790 (1984-06-01), Soyack

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