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to fin ite rio tio fie 16.UNITED STATES PATENT OFFICE.
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25 iew ri- fre ria tio tru -
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NIKOLA TESLA, NEW YORK, ASSIGNOR ALTHAM WATCH COMPANY, OP
W ALTHAM MASSACHUSETTS, CORPORATION MASSACHUSETTS. esla, iti- il,
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FREQUENCY ETER
1,4 Specification tte Patent
