International Telephone and Telegraph Laboratories
of Hendon
of Aerodrome-road, Colindale, N.W.9.[1]
The UK laboratories of International Telephone and Telegraph Corporation
1931 Possibly the first fax machine: a demonstration of a machine for sending documents and messages, in black and white, such as line drawings. The demonstration, which was conducted at the International Telephone and Telegraph Laboratories Incorporated, was watched by high officials of the Post Office.[2]
1931 With a French partner demonstrated for the first time a microwave telephone system (between Dover and Calais).[3]
1931 "... it throws a beam of wireless waves just like a small searchlight. The most striking feature of the International Telephone and Telegraph Laboratories' discovery is the method by which they generate wireless waves as short as 18 centimetres.[4]
1931 The company had to give up the lease of the aerodrome buildings at Hendon; STC consolidated its activities at Southgate, Woolwich and other places.[5]