Electro-dynamic apparatus for the remote control of signals; Radar apparatus; Radar detectors; Radar displays; Radios; Radiotelephony sets; Telegraph wires; Telegraphic transmitting apparatus; Telegraphs; Telephone apparatus; Telephone transmitters; Transmitters of electronic signals; Vehicle breakdown warning triangles; Vehicle radios; Aeronautical radio communication machines and apparatus; Antennas for wireless communications apparatus; Automatic telegraph apparatus; Electric navigational ...