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Patent US181553 - IMPROVEMENT IN GENERATING ELECTRIC CURRENTS
IMPROVEMENT IN GENERATING ELECTRIC CURRENTS
ALEXANDER GEAHAM BELL
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Patent number
: 181553
Filing date
: Aug 12, 1876
Issue date
: Aug 29, 1876
Inventor
:
ALEXANDER GEAHAM BELL
Current U.S. Classification
:
310/152
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