Electrical remote control system with a central unit, an extension unit and an impulse generator in the central unit
DE450090C
Arrangement for influencing the modulation of intermediate amplifiers
DE521132C
Device for the transmission of pictures or the like.
DE477973C
Press for continuously pressing out a metal coating for a core
DE526034C
Wave transmission system, especially for wireless secret telegraphy
DE516777C
Process for the generation of modulated electrical alternating currents, in particular for high-frequency communication along lines
DE478664C
Two-way radio system
DE484344C
Device for displaying frequency changes
DE459375C
Incandescent cathode tubes in which the control electrode consists of a wire wound spirally onto a carrier part provided with incisions
DE439084C
Housing for induction loading coils
DE459852C
Electric stethoscope
DE471632C
Push-pull circuit for modulating high-frequency oscillations
DE505165C
Circuit arrangement for the connection of a further call device working with different transmission and reception frequencies to fork points
DE497139C
Process for the production of a magnetic body which is composed of isolated individual parts of small thickness of a highly permeable iron-nickel alloy
DE463372C
High frequency transmitter
DE492908C
Electric wave filter, the elements of which contain ohmic resistances in addition to series and shunt reactance elements
DE545329C
Incandescent cathode tubes with a highly emitting cathode coating that sputtered during operation
DE424958C
Electromagnetic inductance coil
DE465039C
Circuit arrangement for transmission of telephone and signal currents over double lines equipped with amplifiers
