Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 204
made complete. This circuit over which the con-versation takes place is shown in Fig. 162. In Figs. 159 to 162, inclusive, those parts actually engaged in theparticular operation illustrated by each figure, are shown in heavy 1S2 AMERICAN TELEPHONE PRACTICE. lines, the parts which, for the time… … rrr*
Telephone
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