Cover Johnson A.T. ELECTRIC FLASHES OR THE SYSTEMS OF WIRELESS TELEGRAPHY AND TELEPHONY
Id: 153726

ELECTRIC FLASHES OR THE SYSTEMS OF WIRELESS TELEGRAPHY AND TELEPHONY

174 pp. (English).

Summary

174с

ELECTRIC FLASHES

OH

THE SYSTEMS OF WIRELESS TELEGRAPHY AND TELEPHONY

BY

A. T. M. JOHNSON, A.M.M.C.I.E.

Inventor of the Johnson-Guyott system of Wireless Secret Telegraphy and Telephony

With an Introduction by Dr RICHARDSON

LONDON :

R. A. EVERETT & CO., LTD. 42 ESSEX STREET, STRAND, W.C. 1904.

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