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Edison Light Bulb Patent Signed

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Edison Light Bulb Patent Signed
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Extraordinary item documenting one of man's greatest inventions, the electric light bulb. Unusually signed in full, ''Thomas Alva Edison'' conveying the gravity of the document as felt by Edison when he signed it. Patent application to the Governor of India is dated 23 June 1853 entitled, ''The Petition of Thomas Alva Edison of Menlo Park, New Jersey, United States of America to file under Act 15 of the Legislation Council of India'' and reads in full, ''That your Petitioner has obtained Her Majesty’s Letters Patent, dated the 29th day of December 1882 and numbered 6206 for 'Improvements in incandescing conductors for electric lamps and in moulds for the carbonization of the same,' and that such Letters Patent are to continue in force for fourteen years, that your Petitioner believes that the said Invention is not now and has not hitherto been publicly known or used in India. The following is a description of the Invention - The Invention relates to a flexible carbon filament for an incandescing electric lamp, formed of a number of separate continuous filaments consisting of natural vegetable fibers, secured together, and each capable of independent expansion and contraction. The Invention also relates to a mould for the carbonization of straight filaments, having a moveable block or blocks for the reception of one or both ends of the filament and allowing for the contraction during the operation. Your Petitioner therefore prays for leave to file a specification of the said Invention pursuant to the provisions of Act No 15 of 1859 of the Legislative Council of India. And your Petitioner will ever pray etc. The twenty third day of June, 1883.'' Three-page handwritten document (on two sheets) is signed by Edison but not written by him. It has been well-preserved with a dark, clear signature by Edison. Measures 8'' x 12'' with some ink show-through and toning, but nonetheless in very good to near fine condition. Accompanied by a letter dated 11 August 1883 (the day the patent was filed) from Arthur St. John Caruthers, Edison's intermediary in India, presented at the time to verify the legitimacy of the Edison's patent. Carruthers' letter reads in full, ''I Arthur St. John Carruthers of 10 Government Place East in the Town of Calcutta Solicitor do solemnly and sincerely declare that I have been appointed by Thomas Alva Edison of Menlo Park New Jersey, United States of America an Inventor his agent for the purpose of applying for and obtaining from the Government of India an exclusive privilege or Letters Patent for 'Improvements in incandescing conductors for electric lamps and in moulds for the carbonization of the same' and I verily believe that the declaration purporting to be the to be the Declaration of the said Thomas Alva Edison annexed to the Petition was signed by him and the contents thereof are true. Dated this 11th day of August 1883.'' Due to the complicated and time consuming regulations of the U.S. Patent process, Edison actually received approval for this foreign patent before his marquee invention was secured in the United States. This patent application was kept on file in the country of India during its 14 year enforcement where manufacturers of Edison's new invention were required to pay him and his laboratory residual fees. When the 14 year patent term expired, this document was no longer valid, and so returned to Edison's laboratory office in Menlo Park, New Jersey.This piece is displayed in a custom archival frame along with photographs of Edison, a detailed plaque, a printed schematic diagram of his light bulb, and an original 1800’s magazine advertisement for his new invention. Framed presentation measures 38'' x 42''. Accompanied by COA from PSA/DNA.