Partly-printed DS, signed “Thos. A. Edison,” one page, 8.5 x 3.75, February 28, 1921. Edison Storage Battery Co. promissory note, in part: "On the 31st day of May 1921, we promise to pay to the order of American Copper Products Corporation Three Thousand Forty Six Dollars." Signed at the conclusion by Edison as chairman of the board of directors, and countersigned by a vice president. In fine condition, with a large "Cancelled" stamp affecting Edison's signature. The Edison Storage Battery Company was organized in New Jersey on May 27, 1901, to develop, manufacture, and sell the alkaline storage battery that Edison had developed, which was used for mining lamps, train lighting and signaling, submarines, and electric vehicles.
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