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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 ...
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 ...
The Intellectual Property Law Association of Chicago ("IPLAC") is the oldest intellectual property law association in the United States. [1] Founded in Chicago in 1884 as the “Patent Law Association” and later incorporated on September 23, 1924, as the Patent Law Association of Chicago, it changed to its current name in the late 20th century to reflect the practice of its members within ...
U.S. patent 447,921 - Alternating Electric Current Generator - 1891 March 10 - A generator that produces alternations of 15000 per second or more. 454622 - System of Electric Lighting: Apparatus devised for the purpose of supplying electrical energy in a form suited for the production of certain phenomena, such as lighting.
The Sullivan Center, formerly known as the Carson, Pirie, Scott and Company Building or Carson, Pirie, Scott and Company Store, [4] is a commercial building at 1 South State Street at the corner of East Madison Street in Chicago, Illinois.
Patent model of Eli Whitney’s cotton gin. A patent model was a handmade miniature model no larger than 12" by 12" by 12" (approximately 30 cm by 30 cm by 30 cm) that showed how an invention works. It was one of the most interesting early features of the United States patent system. [1]
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