The Art of Prior Art ...The Serendipity File Continued....
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Telephony
Long Distance Numbering Plan (Area Codes) in 1952
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From the Bell Systems Technical Journal, September 1952. "Fig. 1- Nationwide toll dialing areas in the United States and Canada" |
Precursor to SMS
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Motorola KDT 840 radio |
Portable cellphone
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This is a Fujitsu CDL-240, in an attaché case format. The transceiver is on the left, control unit bottom left, and of course the batteries, top right. |
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Motorola
Envoy Wireless Communicator - 1994 This has a touch-screen, icon user interface, pda-type features. It used the ARDIS wireless network; Magic Cap(tm) operating system. |