Dr. David M. Tombs is in the theory section as the designer of a corona wind loudspeaker in the UK in 1955. This design was never patented or commercialised but was demonstrated at the Imperial College, London, and at the AES in New York. A small article by Tombs appeared in Nature in 1955 and Electronics in 1957.
Early in its development the American Gerald Shirley from Televex was involved in the project, focusing on trying to commercialise the design. He authoured a few more larger articles in Radio and Television News (1956), the JAES (1957) and Radio-Electronics (1957). However it does seem that it never came to pass as a product for sale.
Gerald Shirley did get exclusive rights to the speaker for manufacture by Televex Co. in the US as well as applying for a patent on it. No patent exists though, so it looks like it wasn't pursued to being granted. Tombs had been involved in a wide variety of other technology developments before this and went on to pursue his career in a different direction (at Hoover) afterwards. The book Acoustics and Vibrational Physics (1966) did feature a section on it as did Electroacoustics (1970). For further technical research on it the paper by Matsuzawa 1973 is detailed about a speaker based on Tombs' design.