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Uploader determined values for 2021 and 2022 by obtaining Google Patent listings of patents issued on the first Tuesday of 2021, 2022, and 2023, and performing simple subtraction of lowest-value patent numbers. (All U.S. patents have issue dates on Tuesdays.)
A comparatively small number of models (4,000) were the property of the Rothschild Patent Museum until 2015, when they were transferred to Hagley Museum and Library, forming a part of the museum's collection of patent models. With over 5,000 models, the Hagley's is the largest private collection, and second in size only to the Smithsonian's.
Patent number 443555 published 2 May 1927. [14] The patent was also applied in England [15] and Switzerland [16] in 1927. It consisted of a watch contained within a rectangular case. The timepiece own case, comprising movement, dial, winding and hand-setting mechanism, forms an autonomous unit which in turn is enclosed by a two-part metal case.
Clay pipe dating is the act of dating clay tobacco pipes found at archaeological sites to specific time periods. Pipe bowl found in Kent , southeast England. The circular hole through the tube is slightly off-centre and measures 3.36mm in diameter, and would suggest a rough date of c.1610 AD.
In 2004, i.e. in the early years of Espacenet, Nancy Lambert considered that, although free, Espacenet, like the United States Patent and Trademark Office (USPTO) database of US patents, "still tend[ed] to have primitive search engines and in some cases rather cumbersome mechanisms to download patents."
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In tribute, upon the Gettysburg Address, Abraham Lincoln was presented with a William Ellery, key wind watch Waltham Model 1857, serial number 67613. This watch is now in the collection of the National Museum of American History at the Smithsonian Institution in Washington, DC. [3] [4] [5]
The patent was both granted and issued on February 8, 1802. It was signed by President Jefferson, Secretary of State James Madison , and Attorney General Levi Lincoln . In subsequent years, Simon Willard visited Thomas Jefferson at his home, Monticello , near Charlottesville, Virginia .