U NITED S TATES P ATENT O FFICE.
NIKOLA TESLA, OF NEW YORK, N. Y.
COIL FOR ELECTRO-MAGNETS.
SPECIFICATION forming part of Letters Patent No. 512,340, dated January 9, 1894.
Application filed July 7, 1893. Serial No. 479,804. (No model.)
U NITED S TATES P ATENT O FFICE.
NIKOLA TESLA, OF NEW YORK, N. Y.
COIL FOR ELECTRO-MAGNETS.
SPECIFICATION forming part of Letters Patent No. 512,340, dated January 9, 1894.
Application filed July 7, 1893. Serial No. 479,804. (No model.)
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