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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.
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.)
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.
The delay was attributed by spokesmen for the Patent Office to a combination of a sudden increase in business method patent filings after the 1998 State Street Bank decision, the unfamiliarity of patent examiners with the business and financial arts (e.g., banking, insurance, stock trading etc.), and the issuance of a number of controversial ...
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.
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This series was discontinued in 1516, and all charters issued thereafter, mainly for grants of titles, were entered on the patent rolls. The patent rolls run in an almost unbroken series from 1201 to the present day, with a small number of gaps, notably during the English Civil War and Interregnum (1641–1660).
Baekeland filed a substantial number of related patents. [5] Bakelite, his "method of making insoluble products of phenol and formaldehyde", was filed on July 13, 1907, and granted on December 7, 1909. [12] He also filed for patent protection in other countries, including Belgium, Canada, Denmark, Hungary, Japan, Mexico, Russia, and Spain. [13]