翻訳と辞書 Words near each other ・ Douglas Grove, West Virginia ・ Douglas Guest ・ Douglas Gunasekera ・ Douglas Gunn ・ Douglas Guthrie ・ Douglas Gutwein ・ Douglas H. Bosco ・ Douglas H. Chadwick ・ Douglas H. Cooper ・ Douglas H. Fisher ・ Douglas H. Ginsburg ・ Douglas H. Johnson ・ Douglas H. Johnston ・ Douglas H. Paal ・ Douglas H. Parker ・ Douglas H. Ring ・ Douglas H. Turner ・ Douglas H. Ubelaker ・ Douglas H. Wheelock ・ Douglas Hacking, 1st Baron Hacking ・ Douglas Hagerman ・ Douglas Hague ・ Douglas Hahn ・ Douglas Haig (actor) ・ Douglas Haig (disambiguation) ・ Douglas Haig, 1st Earl Haig ・ Douglas Hall ・ Douglas Hambidge ・ Douglas Hamilton ・ Douglas Hamilton (disambiguation) Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Douglas H. Ring ： ウィキペディア英語版 Douglas H. Ring Douglas H. Ring (March 28, 1907 in Montana – September 8, 2000 in Red Bank, New Jersey) was one of the Bell Labs engineers that invented the cell phone. The history of cellular phone technology began on December 11, 1947 with an internal memo written by Douglas H. Ring in which he proposed development of a cellular telephone system by AT&T. Although Martin Cooper of Motorola is considered the inventor of the first handheld cellular telephone and the first person to demonstrate to reporters a handheld cell phone call, Cooper's April 1973 call used cellular telephone technology invented and developed by Bell Labs engineers. ==See also== * History of mobile phones * W. Rae Young * Amos E. Joel, Jr. 〔 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「Douglas H. Ring」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.