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Thomas Edison

Thomas Edison

Thomas Alva Edison (February 11, 1847 – October 18, 1931) was an American inventor, scientist and businessman who developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and a long-lasting, practical electric light bulb. Dubbed "The...
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A US patent is the grant of a property right to the inventor for an invention, issued by the United States Patent and Trademark OfficeThe right conferred by the patent grant is “the right to exclude others from making, using, offering for sale, or selling” the invention in the United States or ...
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#223898

#223898

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Stencil duplicator

Stencil duplicator

The stencil duplicator or mimeograph machine (often abbreviated to mimeo) is a low-cost printing press that works by forcing ink through a stencil onto paper. Along with spirit duplicators and hectographs, mimeographs were for many decades used to...

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Patent Number:

  • 180,857

Patent office:

Incandescent light bulb

Incandescent light bulb

The incandescent light bulb, incandescent lamp or incandescent light globe is a source of electric light that works by incandescence (a general term for heat-driven light emissions which includes the simple case of black body radiation). An electric...

Inventor:

Patent Number:

  • 223,898

Issue Date:

  • Jan 27, 1880

Application Date:

  • Nov 4, 1879

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