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The Bell System Technical Journal
Devoted to the Scientific and Engineering Aspects
of Electrical Communication
EDITORIAL BOARD
J. J. Carty Bancroft Gherardi F. B. Jewett E. B. Craft L. F. Morehouse O. B. Blackwell H. P. Charlesworth E. H. Colpitts R. W. King—Ec/ffor Published quarterly by the AmericanTe'ephone andTelegraph Company, through its Information Department, in behalf of the Western Electric Company and the Associated Companies of the Bell System Address all correspandcnce to the Editor Information Department AMERICAN TELEPHONE AND TELEGRAPH COMPANY 195 BROADWAY. NEW YORK, N. Y. Copyright, 1922. Application for Second Class Matter Pending
50c. Per Copy
Copyright, 1922.
$1.50 Per Year
Vol. I
NOVEMBER, 1922
No. 2
Physical Theory of the Electric Wave-Filter
Note: The electric wave-filter
THE purpose