Illinois Technograph

Illinois Technograph

4.11 - 1251 ratings - Source

... Thompson Products has developed the aquot;285-Aaquot; Servo System, a remote control two piece closed circuit television unit ... Radio receivers pick up the radio waves and decoders determine which messages are intended for each location. ... At present, there are 128 speakers on the project from the foundation to the top floor.

Title:Illinois Technograph
Publisher: - 1955


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