Pipedia Dunhill Dating Guide: Difference between revisions

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====CANADIAN PATENT. No. 197365/20====
====CANADIAN PATENT No. 197365/20====
<span style="color:#800000">['''1927 & 1928 up to 1934''']</span> The patent for Dunhill's aluminum Inner Tubes registered in Canada.<br>
<span style="color:#800000">['''1927 & 1928 up to 1934''']</span> The patent for Dunhill's aluminum Inner Tubes registered in Canada.<br>


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