Find number abc
If 6bbc6 - ca964 = 3cb6c find number abc. Multiple solutions may exist.Correct answers: 2
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Edison applies for first patentIn 1868, Thomas Edison of Boston, Mass., first patent application was received and recorded by the Patent Office. It was for an “Electrographic Vote Recorder.” The device, the first of its kind, would enable a legislator to register a vote either for or against an issue by turning a switch to the right or left. His application was executed (signed and dated) on 13 Oct 1868, and issued by the U.S. Patent Office on 1 Jun 1869 (No. 90,646). He eventually held over 1,500 patents.« |