Tuesday, June 30, 2009
The dial on the prototype of the rotary telephone contained numbers 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, and special character "Z."

See also:
- AT&T: A Brief History
keywords: almon strowger, bell system, telegraph, phone, bell telephone laboratories, pulse dialing, science and technology, trivia, fun fact, fact of the day

















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