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  2. Patent drawing - Wikipedia

    en.wikipedia.org/wiki/Patent_drawing

    A patent application or patent may contain drawings, also called patent drawings, illustrating the invention, some of its embodiments (which are particular implementations or methods of carrying out the invention), or the prior art. The drawings may be required by the law to be in a particular form, and the requirements may vary depending on ...

  3. List of Nikola Tesla patents - Wikipedia

    en.wikipedia.org/wiki/List_of_Nikola_Tesla_patents

    U.S. patent 390,414 - Dynamo Electric Machine - 1888 October 2 - Related to the patents of Tesla and Charles F. Peck, numbers: US381968 and US382280; Ordinary forms of continuous and alternate current systems may be adapted to Tesla's system, with slight changes to the systems; Effects their forms; Only the best and most practical solutions are ...

  4. Category:Images from US patents - Wikipedia

    en.wikipedia.org/.../Category:Images_from_US_patents

    A portion of the disclosure of this patent document contains material which is subject to (copyright or mask work) protection. The (copyright or mask work) owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but ...

  5. United States Patent and Trademark Office - Wikipedia

    en.wikipedia.org/wiki/United_States_Patent_and...

    The USPTO web site provides free electronic copies of issued patents and patent applications as multiple-page TIFF (graphic) documents. The site also provides Boolean search and analysis tools. [100] The USPTO's free distribution service only distributes the patent documents as a set of TIFF files. [101]

  6. Design patent - Wikipedia

    en.wikipedia.org/wiki/Design_patent

    Design patents can be invalidated if the design is dictated solely by function (e.g. the outline of a key blade blank). Design patents are valid for 14 years from the date of issue if filed prior to May 13, 2015, or 15 years from the date of issue if filed on or after May 13, 2015. [14] [15] There are no maintenance fees.

  7. Prior art - Wikipedia

    en.wikipedia.org/wiki/Prior_art

    Patents disclose to society how an invention is practiced, in return for the right (during a limited term) to exclude others from manufacturing, selling, offering for sale or using the patented invention without the patentee's permission. Patent offices deal with prior art searches in the context of the patent granting procedure.

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