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Expired
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Henry George Percival
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Individual
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Individual
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Publication of GB190820554ApublicationCriticalpatent/GB190820554A/en
20,554. Percival, H. G. Sept. 30. Stoppers. - The neck of a poison bottle has two wedge-shaped recesses 3 which receive projections 5 formed on the stopper 4. A dummy stopper 7 fits into a recess 6 formed in the stopper 4. In use, if the dummy stopper be removed it is found that the liquid cannot be poured from the bottle and attention is called to its dangerous nature,
GB190820554D1908-09-301908-09-30Improvements in Bottles and Stoppers
ExpiredGB190820554A
(en)