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Alexander Duke
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Individual
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Individual
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Publication of GB189713840ApublicationCriticalpatent/GB189713840A/en
13,840. Duke, A. June 5. Tobacco pipes.-The base of the bowl or other part of the pipe is provided with a ball valve, which may consist of a short glass tube a having contracted ends c, c<1> and containing a glass ball b. The valve admits air while smoking.
GB189713840D1897-06-051897-06-05Improvements in Tobacco Pipes.
ExpiredGB189713840A
(en)