Science and invention in Birmingham 1054 Mk XVIs) had been built. CBAF became the largest and most successful plant of its type during the 1939–45 conflict. As the largest Spitfire factory in the UK, by producing up to 320 aircraft per month, it built over half of the approximately 20,000 aircraft of this type. 1944: Anthony Ernest Pratt takes out his first patent for a board game named 'Murder', this is later to become the world-renowned murder mystery game 'Cluedo'. 1946: Chance Brothers produce the first all-glass syringe with interchangeable barrel and plunger, thereby allowing mass sterilisation of components without the need for matching them.
Mystery fiction magazines in the 1930s and 1940s increased interest in mystery fiction. Pulp magazines decreased in popularity in the 1950s with the rise of television so much that the numerous titles available then are reduced to two today: "Alfred Hitchcock's Mystery Magazine" and "Ellery Queen's Mystery Magazine". The detective fiction author Ellery Queen (pseudonym of Frederic Dannay and Manfred B. Lee) is also credited with continuing interest in mystery fiction. Interest in mystery fiction continues to this day because of various television shows which have used mystery themes and the many juvenile and adult novels which continue to be published. There