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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Ericsson DBH 1001 telephone ： ウィキペディア英語版 Ericsson DBH 1001 telephone The Bakelite phone, officially known as Ericsson DBH 1001, and later as M33, N1020, and ED 702, was a Swedish line of telephones made from the polymer Bakelite and produced for over thirty years between 1931 and 1962. ==History== The Ericsson DBH 1001 of 1931 was a collaborative project between the Elektrisk Bureau in Oslo, LM Ericsson and Televerket (Sweden). It was designed by electrical engineer Christian Bjerknes and Norwegian artist Jean Heiberg. It was the first Bakelite phone with integral cradle, dial and ringer, and was very modern for its time. Until the early 1930s, the housing of the Swedish phone models was made from pressed steel. Material change from steel to Bakelite brought new opportunities in design, while also reducing the production time for the housing. The Bakelite phone was not only compact but also light at just below 3kg, and could be grasped by one hand. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ericsson DBH 1001 telephone」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.