GB000000767192A 29.05.1952 30.01.1957 JOHN MAURICE MCLEAN PINKERTON; LYONS & CO LTD J
Improvements in and relating to data transfer apparatus. Complete Specification published January 1957. See https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=GB&NR=767192A&KC=A&FT=D&ND=4&date=19570130&DB=EPODOC&locale=en_EP
