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Pipedia Dunhill Dating Guide: Difference between revisions
→PATENT No. 197365
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====PATENT No. 197365==== | ====PATENT No. 197365/20==== | ||
<span style="color:#800000">[''' | <span style="color:#800000">['''1920 up to 1937''']</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): ''' | The date code is just after the patent number (sometimes after ENGLAND): '''1920 +: <span style="font-size:small"> <u>2</u>, <u>3</u>, <u>4</u>, <u>5</u>, <u>6</u>, <u>7</u>, <u>8</u>, <u>9</u> and, <u>0</u> for 1930, then <u>11</u>, <u>12</u>, <u>13</u>, <u>14</u>, <u>15</u>, <u>16</u> and <u>17</u> for the early-30s.</span>''' (they are smaller and underscored). | ||
* In 1927, this patent was applied without the "CANADIAN" before the patent number, i.e, only "PATENT. No. 197365/20" | |||
* "MADE IN ENGLAND" stamped on pipes intended for export, in these cases, stamped '''DUNHILL'S "SHELL"''' (without "BRIAR"). | |||
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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==== 417574/34 ==== | ==== 417574/34 ==== | ||