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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 ...
U.S. patent 1,329,559 - Valvular Conduit - 1920 February 3 - Improvement by means of a conduit or channel characterized by valvular action; Conduit has baffles, recesses, projections, enlargements, or buckets that channels the flow's movement one way more efficiently; Mechanical diode; One-way valve with no moving parts.
[2] [7] The copyrighted work might consist of the written description for an invention or the drawings or photographs contained in the patent. [7] Likewise, the Office may register a claim to copyright in articles, publications, or other non-patent literature that may be submitted with a patent application. [7]
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.
[13] [14] Robbins most probably had drawings done by Robert Washington Fenwick, his apprentice artist. [15] Robbins filed the application on March 10, 1849, [13] which was granted as Patent No. 6,469 on May 22, 1849. [16] Lincoln's patent is the result of Offutt's flat-boat experience he had back in 1831. [17]
U.S. Patent No. 9,999,999 Smith [Patent] Claim 1. A filter comprising a housing, Smith teaches "the filter housing the housing having an outer wall, having an outer wall 1, a closed end, a closed end 2, an open end, and: an open end 3, a lid: and a hinged lid 4 attachable to the open end... that is securable to the open end 3 via clamp 5."
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