Found 2 records, showing 1 of 1 pages
1920:
Automatic Telegraph Co
The Automatic Telegraph Co Aircraft Morse Transmitter
Rec. Num. 1 of 2
Source: Aeroplane July 7th 1920
1921:
Automatic Telegraph Co
The Automatic Telegraph - One Lever Telegraph For Aircraft
Rec. Num. 2 of 2
Source: Flight March 24th 1921