Pipedia Dunhill Dating Guide: Difference between revisions

Pipedia Dunhill Dating Guide (view source)

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 <font size="2">In 1918, Dunhill began to unify two technologies into a single pipe — one patent for oil treatment and another for its inner tubes (it is the combination of the above-related patents).</font><br>
 * <font size="3">Click on the patent number to continue.</font>
-[[#Earliest_Shell|U.S.A. PAT / APPLD FOR]] — [[#Earliest_Shell|PAT. No. 5861/12 . PAT.PENDING]] — [[#PAT._Nos._5861/12.119708/17|5861/12.119708/17]] — [[#PAT._Nos._119708/17.116989/17|119708/17.116989/17]] — [[#119708/17.BREV.No._491232/18|119708/17.BREV.No. 491232/18]] — [[#PAT.APP FOR_over_PAT.MAR.9.15|PAT.MAR.9.15 over PAT.APP FOR]] — [[#PAT.APP_FOR_over_PAT.1914|PAT.APP FOR over PAT.1914]] — [[#PAT.MAR.9.15_&_1341418/20|PAT.MAR.9.15 & 1341418/20]] — [[#PAT._Nos. 119708/17.116989/17|PAT. Nos. 119708/17.116989/17]] — [[#119708/17.BREV.No._491232/18|119708/17.BREV.No. 491232/18]] — [[#PAT._Nos. 158709/14&209845/21|PAT. Nos. 158709/14&209845/21]] — [[#PAT._Nos._1130806/15&1341418/20|PAT. Nos. 1130806/15&1341418/20]]. — [[#PAT. Nos._209845/21&197365/20|PAT. Nos. 209845/21&197365/20]] — [[#PAT._Nos._1341418/20&1343253/20|PAT. Nos. 1341418/20&1343253/20]] — [[#PAT._Nos._158709/14&209845/21|PAT. Nos. 158709/14&209845/21]] — [[#CANADIAN_PATENTS_209845/21&PAT.PENDING|CANADIAN PATENTS 209845/21&PAT.PENDING]]. — [[#U.S.PATENTS_1341418/20&1861910/32|U.S.PATENTS 1341418/20&1861910/32]] — [[#U.S.PATENTS_1341418/20&1861910/32|U.S.PATENTS 1341418/20&PAT.PENDING]].
+[[#Earliest_Shell|U.S.A. PAT / APPLD FOR]] — [[#Earliest_Shell|PAT. No. 5861/12 . PAT.PENDING]] — [[#PAT._Nos._5861/12.119708/17|5861/12.119708/17]] — [[#PAT._Nos._119708/17.116989/17|119708/17.116989/17]] — [[#119708/17.BREV.No._491232/18|119708/17.BREV.No. 491232/18]] — [[#PAT.APP FOR_over_PAT.MAR.9.15|PAT.MAR.9.15 over PAT.APP FOR]] — [[#PAT.APP_FOR_over_PAT.1914|PAT.APP FOR over PAT.1914]] — [[#PAT.MAR.9.15_&_1341418/20|PAT.MAR.9.15 & 1341418/20]] — [[#PAT._Nos. 119708/17.116989/17|PAT. Nos. 119708/17.116989/17]] — [[#119708/17.BREV.No._491232/18|119708/17.BREV.No. 491232/18]] — [[#PAT._Nos. 158709/14&209845/21|PAT. Nos. 158709/14&209845/21]] — [[#PAT._Nos._1130806/15&1341418/20|PAT. Nos. 1130806/15&1341418/20]]. — [[#PAT. Nos._209845/21&197365/20|PAT. Nos. 209845/21&197365/20]] — [[#PAT._Nos._1341418/20&1343253/20|PAT. Nos. 1341418/20&1343253/20]] — [[#CANADIAN_PATENTS_209845/21&PAT.PENDING|CANADIAN PATENTS 209845/21&PAT.PENDING]]. — [[#U.S.PATENTS_1341418/20&1861910/32|U.S.PATENTS 1341418/20&1861910/32]] — [[#U.S.PATENTS_1341418/20&1861910/32|U.S.PATENTS 1341418/20&PAT.PENDING]].
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