The year 1933 witnesses the birth of a revolutionary new style of telephone that combined transmitter and receiver in one unit. Known as model No. 3, it becomes the basis for all phone models to come and is destined to serve as the typical telephone in Japanese society for some 30 years to come. After the war when production of standard telephones is unable to keep up with demands for restoration of phone service, a number of these models with equivalent capability will be purchased from manufacturers' own inventory of phone for use with private exchange equipment, and pressed into service as an emergency measure.

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