Circuit arrangement for alternators, especially pole changers in telephone systems
DE743756C
Coin telephone, especially for network group traffic
DE763328C
Stepper motor with rotating armature
DE740807C
Pneumatic tube system
DE760835C
Letter distribution plant
DE734697C
Device for transferring documents or the like in the case of upright belt conveyors laid at an angle to one another
DE727638C
Circuit arrangement for current impulses over sealed lines of telecommunications systems, in particular for the purposes of long-distance dialing in telephone systems
DE759296C
Circuit arrangement to prevent clicking noises when switching on listening or testing devices on existing telephone connections
DE727637C
Circuit arrangement for the elastic improvement of current surges in telecommunications systems, in particular in telephone systems
DE729969C
Electric counter with armature return spring, especially conversation counter
DE740839C
Sorting belt system for piece goods, which is fed to the collecting belts by means of radiating slides
DE718330C
Loading device for the optional loading of belt zones of a collecting belt
DE742773C
Letter distribution system
DE741232C
Circuit arrangement for the monitoring of the conversation time of the self-dialing long-distance connections of coin telephones
DE708570C
Circuit arrangement for coin-operated telephones with limited conversation time
DE713243C
Coin phone with cashier magnet
DE713024C
Stepper motor for driving telecommunication devices, in particular conversation timers
DE713025C
Stepper motor with rotating armature for driving telecommunication devices, especially conversation timers
DE713242C
Zone determiners in telephone systems, in particular for the automatic charge control of network group connections established by coin telephones
DE723231C
Circuit arrangement for monitoring the conversation time with self-dialing long-distance connections for coin telephones with charge control through switching means in the coin telephones
