| Description | Letters Patent No. 560,909, dated 17th October 1942, issued to Cannon Iron Foundries Ltd. with Richard Talbot Clayton and Arthur Frederick Oatley, for 'taps and cocks for controlling fluids'; complete specification for the same patent; patent specification no. 488,494 for improvements in valves for controlling and interrupting the flow of fluids; correspondence with Barker, Brettell & Duncan, Chartered Patent Agents, Birmingham. |