GEC 3-pin plug Designer (Organisation) General Electric Manufacturer General Electric Date 1920 - 1929 (circa)
GEC bayonet light fitting Designer (Organisation) General Electric Manufacturer General Electric Date 1930 - 1939 (circa)
GPO 312L telephone Designer (Person) Heiberg, Jean Bjerknes, Johan Christian Designer (Organisation) Ericsson GPO Manufacturer Siemens Manufactured for GPO Date 1954
GPO pyramid telephone 162 Designer (Organisation) Siemens GPO Manufacturer Siemens Manufactured for GPO Date 1932