Before revision: Grillo telephone , Museum of science and technology, Milan ( 1965) Brionvega TS 502 radio , Museum of science and technology, Milan ( 1963 ) Brionvega Soundbook portable radio cassette player, Museum of science and technology, Milan (1974) Nintendo Game Boy Advance SP (2003) The clamshell is a form factor of electronic devices such as a mobile phone, game console or portable computer.
After revision: Brionvega TS 502 radio , Museum of science and technology, Milan ( 1963) Grillo telephone , Museum of science and technology, Milan ( 1965 ) Brionvega Soundbook portable radio cassette player, Museum of science and technology, Milan (1974) Nintendo Game Boy Advance SP (2003) The clamshell is a form factor of electronic devices such as a mobile phone, game console or portable computer.