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Reference Number	D8/L5/10
Title	Papers re: Registered Design No. 721,021 - Gas Ring made of Metal
Description	Correspondence between Cannon and Barker, Brettell and Duncan, Chartered Patent Agents, Birmingham, re: registered design no. 721,021 for a gas ring made of metal.
Date	May 1926-Apr 1936
AccessStatus	Open
Level	File

Record