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Pipedia Dunhill Dating Guide: Difference between revisions
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Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date [[#Triggers|'''here''']]. | Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date [[#Triggers|'''here''']]. | ||
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====PATENT No. 197365==== | |||
<span style="color:#800000">['''1937 up to 1941''']</span> The patent for Dunhill's aluminum [https://pipedia.org/images/3/32/Innerwflange.jpeg Inner Tubes with flange] registered in '''Canada'''.<br> | |||
The date code is just after the patent number (sometimes after ENGLAND): '''1930 +: <span style="font-size:small"> <u>7</u>, <u>8</u>, <u>9</u>, <u>7</u>, <u>8</u>, <u>9</u> and, <u>0</u> for 1940, then <u>1</u> for 1941.</span>''' (they are smaller and underscored). | |||
Sometimes the patent was stamped without any date code. See if there are any additional details that can help you figure out an approximate date [[#Triggers|'''here''']]. | |||
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