Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,369 pages of information and 233,846 images on early companies, their products and the people who designed and built them.
of 2 Bentinck Street, London, W1. Telephone: Welbeck 2591. Cables: "Amplivox, London"
1947 Listed Exhibitor - British Industries Fair. Manufacturers of hearing Aids for the Deaf. personal All-in-One and Two-Piece Instruments. Miniature Earphones. School and Church Equipments. (Olympia, Ground Floor, Stand No. D. 1683)