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Patents for George Harrington
Patents 1 - 2 of 2
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NumberDatePatenteeTitleType
132,456Oct. 22, 1872T.A. EdisonImprovement in apparatus for perforating paper for telegraphic usetelegraphy apparatus
195,751Oct. 02, 1877T.A. EdisonAutomatic Telegraphtelegraphic apparatus
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