IEEE

STARS:Electromechanical Telephone-Switching

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Attachments
File NameFile TypeUserLast Modified
-1_Crossbar_NY_May_1938.jpgimage/jpegAdministrator127. Sep. 2010, 18:05:49
-4A_Toll_Crossbar_1955.jpgimage/jpegAdministrator127. Sep. 2010, 18:06:13
Keith_Patent_597062_TELEPHONE_Dial_1.jpgimage/jpegAdministrator122. Sep. 2010, 18:52:48
Panel_--_Chicago-Franklin_1938.jpgimage/jpegAdministrator127. Sep. 2010, 18:04:43
Step-by-Step_--_Dallas_Telephone_Co._1919.jpgimage/jpegAdministrator127. Sep. 2010, 18:04:23
Strowger_patent_447918_1.jpgimage/jpegAdministrator122. Sep. 2010, 18:53:18

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