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DE3726181A1
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Process for the superheterodyne reception of a modulated signal
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EP0182742A1
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Circuit for producing a criterion for reception
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EP0184984A1
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Evaluating device for a pulsating tone signal
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EP0181286A1
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Shielded device for protecting telecommunication lines against disturbances
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FI851778A0
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Foerfarande foer fjaerrlagring av aotminstone ett kaennetecken till en radioapparat samt radioapparat foer utfoerande av foerfarandet.
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EP0156765A1
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Radio-system for transmitting data signals independently of speech signals from plural substations to a main station
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CH662227A5
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Contact device on a telephone subscriber station
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CH661396A5
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Desk-top telephone with operating and display components
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CH661373A5
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Alphanumeric display system with segments controlable in every visible and invisible condition.
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CH661389A5
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Filter arrangement for a modulation signal
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EP0128123A1
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Portable apparatus for recording, memorizing, and transmitting data, and application of this apparatus as a watchman's timepiece
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CH661397A5
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Telephone subscriber station with an electronic switch which opens and closes the subscriber loop
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CH662225A5
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Opto-electronic arrangement for powering an electronic circuit with light.
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CH662418A5
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Method for setting the position of the centre of mass of a body of revolution, and arrangement for carrying out the method
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CH660106A5
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Arrangement of a loudspeaker in a housing
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CH660823A5
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Switch arrangement in a telephone device
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CH660104A5
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Arrangement in a telephone device for retaining the cradle spring assembly in its rest position
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CH658558A5
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Evaluator for recognising high frequency signal of a specified frequency
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US4533787A
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Printed circuit assembly
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EP0085198A1
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Electronic apparatus with operation mode established by connecting bridges
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