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Dunhill: Difference between revisions
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The documented history of Dunhill's inception of the Shell is largely limited to patent applications — there are no catalogue pages or advertisements promoting blasted pipes at the time. The preliminary work on the English patent (No. 1484/17) was submitted on October 13, 1917. The patent submission was completed half a year later, on April 12, 1918, followed by the granting of the English patent on October 14, 1918. This was less than a month before the end of The Great War on November 11th. | The documented history of Dunhill's inception of the Shell is largely limited to patent applications — there are no catalogue pages or advertisements promoting blasted pipes at the time. The preliminary work on the English patent (No. 1484/17) was submitted on October 13, 1917. The patent submission was completed half a year later, on April 12, 1918, followed by the granting of the English patent on October 14, 1918. This was less than a month before the end of The Great War on November 11th. | ||
The American patent (No. 1,341,418) | The American patent application (No. 1,341,418) was prepared and filed before the English patent was granted, between September 19 and October 14, 1918. The American patent was granted more than a year later, on May 25, 1920. Canadian documents were behind the U.S. a year, with application in 1919 and granted in 1921. | ||
<gallery mode="packed-hover" widths=600px heights=600px> | <gallery mode="packed-hover" widths=600px heights=600px> | ||
File:Patentfile1.png|US Patent Office | File:Patentfile1.png|US Patent Office | ||