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PL292270A1
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Output arrangement for a trivalent line signal
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PL291787A1
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Method of applying galvanizing liners onto metal belts, especially in the production of contact elements
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PL284292A1
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Method of selectively applying electrolytic coatings onto external surfaces of butt joints
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PL283783A1
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Circuit arrangement of an electronic control clock
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PL281524A1
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Analog demultiplexer system, especially for low level digital terminal equipment
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PL276778A1
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System for remonte signalization, especially for teletransmission, self operated station
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PL276777A1
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A selecting-controlling rack
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PL274913A1
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Combustion engine air ionizer power supply circuit
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PL274912A1
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Electronic engine air ionizer power supply circuit
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PL274466A1
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Method of applying electrolytic coating to non-ferrous metal strips designed for manufacturing contact springs
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PL274302A1
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Circuit arrangement for indication of increase in leakance of cables in particular those used in telecommunication
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PL273954A1
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Method of and system for transmitting official duty remote control and communication signals in particular through light-pipe telecommunication lines
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PL273953A1
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Method of transmitting information in remote controlling and monitoring systems in particular for telecommunication lines
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PL272215A1
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Controller of the teletransmission systems built on the base of one systemic microcomputer
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PL268726A1
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Circuit for electronic commutation of high-frequency signals in telephone exchanges
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PL268734A1
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Dispatcher's commutator
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PL257588A1
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Multiplexer circuit arrangement in particular for digital system of radio communication lines
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PL257241A1
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Method of sequentially clocking words and sequential clock therefor
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PL257240A1
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Method of receiving digital signals as coded for transmission and transmission code receiver therefor
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PL255227A1
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Control block especially for automatic level control circuits
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