Procedure and equipment for making afterhardening material, especially for injecting material to rise the solidity and/or watertightness of crizzling or/and porous rock and/or concrete mass
HU0700195D0
Level by level multi-level, vertically-structured pulse-width modulalated signal generator
HU0700194D0
Method and circuit arrangement for frequency-based communication and control by advantageously chosen surfaces
HU0402132D0
Multi function circuit containing qcan resonat members for suitable supplying adresses and data to the adress and data inputs of the digital and analogous devices from a signal source characterised by frequency
HU0104149D0
Placeing of pressing-cleat on banding cable
HU9700594D0
Circuit arrangement for providing a unit recognizing system combined with energy supply
HUT55571A
Continous supply unit
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Circuit panel for positioning and carrying component parts
HUT54439A
Universal semiconductor voltage transformer without galvanic separation
HUT52280A
Semiconductor step-up - step-down converter without galvanic disconnecting
