Speech given by the chief engineer of American Telephone & Telegraph Company, John J. Carty, who invented the metallic circuit, which allowed for long distance calls, designed and installed the first multiple switchboard, and developed the bridging bell and common battery systems. Here, he discusses the topic of automatic versus manual switchboard systems. 8vo, 23pp. Stapled paper wrappers, library stamp upper right corner front wrapper. 7 1/2 x 101/2".

Seller Inventory # 19456

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Bibliographic Details

Title: International Conference of European Telephone and Telegraph Administrations Held at the Sorbonne, Paris, Sept. 4th to 11th, 1910: Telephone Service in America
Publisher: Smith, Jones & Leigh, New York
Publication Date: 1910
Binding: Soft cover
Condition: Very good overall

Store Description

We have been booksellers for 50 years, members of the ABAA, ILAB & many prominent trade organizations. You may order from us with the security that an established & reputable bookseller offers you, who abides by the code of ethics established by ILAB. We offer old, rare & out of print books, maps, prints, ephemera & photographs on many subjects. We handle items in every fields. Some of our specialties include the Hudson River Valley, the Antarctic & Arctic, Australia & the South Pacific.

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Antipodean Books, Maps & Prints, ABAA
29 Garrisons Landing, Garrison, NY, 10524, U.S.A.

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