23,116
edits
(Created page with "tout marquage de brevet (patent), White Dot (point blanc) moyen et marquage PROV.PRO en dessous du tuyau -- 1917 marquage de brevet (patent), white dot (point blanc) moyen...") |
(Created page with "*Lors de l'utilisation de ce tableau il est important de garder à l'esprit que ces marquages en dessous-du tuyau s'effacent facilement au fil des polissages et que le tuyau p...") |
||
Line 41: | Line 41: | ||
marquage de brevet (patent), white dot (point blanc) moyen et marquage REG.No sur le dessous du tuyau -- 1917 - 1918 (jusqu'en octobre) (de même que pour les pipes standard "A" 'Duke ST', une estampille "Ao" indique la période juin - octobre 1918) | marquage de brevet (patent), white dot (point blanc) moyen et marquage REG.No sur le dessous du tuyau -- 1917 - 1918 (jusqu'en octobre) (de même que pour les pipes standard "A" 'Duke ST', une estampille "Ao" indique la période juin - octobre 1918) | ||
* | *Lors de l'utilisation de ce tableau il est important de garder à l'esprit que ces marquages en dessous-du tuyau s'effacent facilement au fil des polissages et que le tuyau peut avoir été remplacé. | ||
It would also appear that two other early nomenclature variations have no dating significance. First, on some pipes the INNER TUBE stamp is found without surrounding quotes and on others with such quotes - “INNER TUBE”. It would appear however, that this is simply a question of the patent stamp used, specifically “INNER TUBE” for pipes stamped with the 1912 patent and INNER TUBE for pipes stamped with the 1914 or 1915 patent. Second, it would appear that the alignment of DUNHILL [over] ] DUKE ST S.W. is random. | It would also appear that two other early nomenclature variations have no dating significance. First, on some pipes the INNER TUBE stamp is found without surrounding quotes and on others with such quotes - “INNER TUBE”. It would appear however, that this is simply a question of the patent stamp used, specifically “INNER TUBE” for pipes stamped with the 1912 patent and INNER TUBE for pipes stamped with the 1914 or 1915 patent. Second, it would appear that the alignment of DUNHILL [over] ] DUKE ST S.W. is random. |