Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Inventor
George Gaskell Exton
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Individual
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Individual
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Publication date
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Application grantedgrantedCritical
Publication of GB189628774ApublicationCriticalpatent/GB189628774A/en