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No. 613,735.

N. TESLA.

Patented Nov. 8, 1898.

ELECTRIC CIRCUIT CONTROLLER. (No Model.)

(Application filed Apr. 19, 1898.)

2 Sheets-Sheet I.

HIE NORRIS PETERS

co..

PHOTO-LITHO.. Wlt.SHINGTON. O. C.

No. 613,735.

Patented Nov. 8, 1898. N. TESLA. ELECTRIC CIRCUIT CONTROLLER. (Application filed ·Apr. 19, 1898.)

(No ModeL)

2 Sheets-Sheet 2.

Jfi'Hola ffJta f I?Wen/or

Itivt-. ~ if aydA!/&J 'rHE NORRIS PETf;RS CO. PHOTO.LlTI-lO.. WASHiNGTON, D. C

UNITED STA~rES ·PATENT OFFICE. NIKOLA TESLA, OF NEW YORK, N. Y.

ELECTRIC-CI RC U IT CO NTRO LLER. SPECIFICATION forming part of Letters Patent No. 613,735, dated November 8,1898. Application filed April 19, 1898, Serial No, 678,127.