Combination telephone fire alarm and meter reading system
作者： Roger C Glidden
DOI:
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摘要:
lens.org 参考文章(4)
Karl L Mayer, Paul J Germond, Unattended automatic dialing of telephone numbers ,(1962)
William F Hogan, Alarm system using telephone exchange and automatic dialer for transmission of tone frequencies ,(1963)
Arthur P Jackel, Coordination arrangement for telephone and remote control communication over a common channel ,(1962)