TRANSMITTING AND RECEIVING DEVICES FOR RADIO TRANSMISSION AND TELEPHONY AND PARTS THEREOF; AMPLIFIERS FOR HIGH AND LOW FREQUENCIES, ALSO AMPLIFIERS WITH ADJUSTABLE REVERBERATION EFFECT FOR EFFECTING AN ECHO SOUND; LOUDSPEAKERS AND LOUDSPEAKER COMBINATIONS; LOUDSPEAKER BOXES FOR STEREO RECEPTION; WIRE BROADCASTING DEVICES; MICROPHONES, MICROPHONE-HOLDERS, MICROPHONE-STANDS; HEAD PHONES FOR RADIO BROADCASTING, MEASURING PURPOSES, MAGNET-TONE PURPOSES OR FOR DICTATING MACHINES; RECEIVING AND SCANNING DEVICES FOR SOUND-CARRIERS ON A MECHANICAL, MAGNETICAL, OR OPTICAL BASIS; SINGLE-OR MULTI-RECORD PLAYERS; RECORD-CUTTING DEVICES; TELEPHONE APPARATUS; SELECTOR DIALS; INDUCTORS; RADIO AND TELEVISION SETS, ALSO TRANSISTOR DEVICES AS WELL AS PARTS THEREOF, ALSO IN COMBINATION WITH CLOCKS, PROJECTORS FOR PROJECTION OF RADIO-RECEIVED OR STORED SIGNAL VOLTAGES, FOR INSTANCE, FOR RADIOTELEVISION SETS; IMAGE RECTIFYING AND CLARIFYING APPARATUS; PICTURE TUBES WITH LINE SCANNED SCREEN FACE; REMOTE CONTROLS FOR PICTURE AND TONE; FUSES; SWITCHES; INSULATING TAPES; AND SOUNDTAPE CARTRIDGES.

MEASURING APPARATUS; COMBINED MAGNET-TONE-PICTURE-PROJECTORS INCLUDING SYNCHONIZED DRIVES; MAGNET-TONESUPPLEMENTAL DEVICES-NAMELY, MIXING DESKS FOR CONSOLIDATING VARIOUS TONE SIGNALS AND SPEED INDICATOR FOR THE CONTROL OF THE PROJECTION OF PHOTOGRAPHS IN THE FORM OF SLIDES