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...t Era was between the years of K&P's formation until the expiration of the patent; 1875 through approximately 1910. Though for our purposes we will list this ...es during the war years though they had ceased clay pipe production in the Patent Era and Bog Oak production back in the early 1930s (see below).

[[File:SasieniPatent.png|thumb|Circa 1924 Patent, Courtesy Doug Valitchka]] ...entifies the founder as “J. Sasieni”. However, some research at the U. S. Patent Office conclusively shows that his first name was Joel.

...smoker" <ref name="TMandP" />. On 19 November 1889, Wüterich obtained a US patent (number 415,690) for the same invention. <ref name="USPatent" />. The paten ...istered as a limited company until 1897, after which Wüterich assigned his patent to the company for a consideration of £5,000 and 15,000 £1 shares <ref na

File:1926 120 .jpg|BRUYERE 120 MADE IN ENGLAND 6 “INNER TUBE” PATENT NO 158709/14 (1926) File:1926 361.jpg|BRUYERE 361 MADE IN ENGLAND 6 “INNER TUBE” PATENT NO 1130806/15 (1926)

*1914, July 21st. Linkman’s first(?) Patent (No. 1104203) for an aluminum reinforced push-stem. (RJM) *1924, March 25th. Linkman’s Patent No. 1487867 for a first “tool” type stinger/nicotine collector. (RJM)

*Pre-Patent Era: 1906 – 1937 *Patent Era: 1938 – 1955

...ermine when a pipe was produced, save for what can be deduced from various patent stampings, dating with any specificity has been beyond our grasp. Recently *No "INNER TUBE" or patent stamp & no bit stamp [no such pipe has yet been seen] -- 1910 - 1912

...widths=250px heights=185px caption="WDC Circa 1920s Milano pipes with 1925 Patent date, courtesy Doug Valitchka"> File:WDC 1925Milano01.jpg|1925 Patent

...ropean ideas and design concepts for briar pipes were submitted for a U.S. patent—I didn’t count them—but there is no easy way to determine how many of ...eno Pipes (Breen Brothers), Ambush (Unbay Pipe Manufacturing Co.), and the Patent Urn Pipe Company, are pipe puzzlers to me, maybe less so to someone intimat

...ermine when a pipe was produced, save for what can be deduced from various patent stampings, dating with any specificity has been beyond our grasp. Recently *No "INNER TUBE" or patent stamp & no bit stamp [no such pipe has yet been seen] -- 1910 - 1912

[[file:nimrod8.jpg|thumb|Patent granted to Ashley F. Word Jr. Dec. 9, 1947, courtesy Doug Valitchka]][[File ...manufactured at that time, although Ward's patent annotates several other patent applications for lighters with a tube-like shape.

...ought to stand respectively for “America”, “Bermuda” and “Canada”. Dating patent number Dunhills took on the aura of divination. Early Dunhill catalogs were ...k bowl walls are uncommon in earlier Dunhill Shells. This is true even of patent number magnums, as well other larger then average pipes such as LCs, where

...ought to stand respectively for “America”, “Bermuda” and “Canada”. Dating patent number Dunhills took on the aura of divination. Early Dunhill catalogs were ...k bowl walls are uncommon in earlier Dunhill Shells. This is true even of patent number magnums, as well other larger then average pipes such as LCs, where

#CA PATENT 209845/21 &197365/20 (1928-1934) CA - Sandblast & Tube w/ frange; #CA PATENT 209845/21 (1928-1929) CA - Sandblast;

...80 n.jpg|thumb|right|200px|Dunhill, shape 42 - Root Briar, with horn stem, patent and dated from 1945.©]] <center>'''PATENT Nº 1341418/20'''</center>

...80 n.jpg|thumb|right|200px|Dunhill, shape 42 - Root Briar, with horn stem, patent and dated from 1945.©]] <center>'''PATENT Nº 1341418/20'''</center>

*Pas d' "INNER TUBE" ou de marque de brevet (patent) et pas de marquage sur le tuyau [aucune pipe de ce type n'a encore été d *Marquage de brevet (patent) de 1912, petit White Dot (point blanc) et pas de marquage en dessous du t

...and Trademarks for Tobacco Pipes, and Related Material Issued by the U.S. Patent Office, 1858-1899 (1987); some 500 applications are reproduced with their d ...rmer, passing through holes in the lower part of the inner bowl.” The 1870 patent petition of George Hardingham of Middlesex was rather novel:

...thumb|link=https://pipedia.org/images/c/ca/Lord_Davenport_patent1.pdf|1939 Patent Drawing]] ...thumb|link=https://pipedia.org/images/3/3f/Lord_Davenport_patent2.pdf|1941 Patent Drawing]]

...then graduate from it, then pass the state bar, and then pass the federal patent bar. "OK," I said, and three years later, in 1973, I received my Juris Doct ...et work for corporate clients when they do not want disclosure by way of a patent. I continue to manage a full-time law practice by being very efficient. I s