DeWald radio receiver, c 1935.
© Science Museum / Science & Society Picture Library
A radio receiver with Bakelite moulded case. When combined with a wood flour filler, phenol formaldehyde, known by its trade name 'Bakelite' after its inventor, Leo Baekeland, forms a useful mouldable plastic, with very good electrical insulating properties. It was the first plastic to be used for making radios. Made by the DeWald Radio Manufacturing Co, New York, United States.