VERY RARE ANTIQUE EDISON ELECTRIC PEN. Patent Aug 8, 1876. It was designed as a manuscript stencil for manifold copies. Out of the few thousands that were produced, only a small number of these pens survived.
Thomas Edison - Wikipedia
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Thomas Edison's Electric Pen - Science Museum Blog
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Edison Electric Pen - No. 8448 (1) - Steel - 1876 - Catawiki
Edison Electric Pen
Edison's Electric Pen
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Наука і медицина (до 1930р.) з Америки - з доставкою в Україну