Description

Stockholm: L.M. Ericsson, 1931. 295 by 210mm (11½ by 8¼ inches). Original illustrated wrappers; 47 pp. Thoroughly illustrated throughout with photographs and technical illustrations. Along with seven beautiful full-page photo illustrations of the system.

Ericsson revolutionized the world of automated telephone switching, which allowed society to move away from manually connected calls. This book discusses at length their invention of the 500-line switching system. This system was Ericsson’s initial claim to fame and resulted in major contracts worldwide.

This book is not in OCLC and there are no other copies currently in the trade. The 1944 edition of this book (with 79 pages) has only 2 holdings in OCLC (all in Europe).

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