A Multiple Telephone Switch Board...

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<p>『多数電話スイッチボード...』は、エドワード・O・ツヴィートゥッシュによる、初期の電話交換技術に関する詳細な解説書です。本書は、多数の電話回線を効率的に管理するためのスイッチボードの設計と機能について掘り下げています。発明、技術、ビジネスに関心のある読者にとって、この書籍は貴重な情報源となるでしょう。初期の通信技術の発展を理解するための必読書です。</p><p>This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact and remains as true to the original work as possible. Therefore you will see the original copyright references library stamps (as most of these works have been housed in our most important libraries around the world) and other notations in the work.</p><p>This work is in the public domain in the United States of America and possibly other nations. Within the United States you may freely copy and distribute this work as no entity (individual or corporate) has a copyright on the body of the work.</p><p>As a reproduction of a historical artifact this work may contain missing or blurred pages poor pictures errant marks etc. Scholars believe and we concur that this work is important enough to be preserved reproduced and made generally available to the public. We appreciate your support of the preservation process and thank you for being an important part of keeping this knowledge alive and relevant.</p><br>
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