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Arthur Thompson Duncan
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Publication of GB190214838ApublicationCriticalpatent/GB190214838A/en
14,838. Duncan, A. T. July 3. Cartridges, smallarm and machinegun.-The powder charge is made conical at the rear end by inserting a plug e into the cartridge case.
GB190214838D1902-07-031902-07-03Improvements in Cartridge Cases for use with Firearms.
ExpiredGB190214838A
(en)