ORTHOGONAL FILTERS (ELECTRICAL OSCILLATION TECHNOLOGY)
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BTEQUALIZER QUADRIPOLES (ELECTRICAL OSCILLATION TECHNOLOGY)
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UDC621.372.55,1
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Descriptor GERORTHOGONALFILTER (ELEKTRISCHE SCHWINGUNGSTECHNIK)
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Descriptor ENGORTHOGONAL FILTERS (ELECTRICAL OSCILLATION TECHNOLOGY)
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Descriptor FREFILTRES ORTHOGONAUX (TECHNIQUE D'OSCILLATIONS ÉLECTRIQUES)
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Variant GERFILTER/ORTHOGONALFILTER (ELEKTRISCHE SCHWINGUNGSTECHNIK)
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Variant ENGFILTERS/ORTHOGONAL FILTERS (ELECTRICAL OSCILLATION TECHNOLOGY)
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Variant FREORTHOGONAL/FILTRES ORTHOGONAUX (TECHNIQUE D'OSCILLATIONS ÉLECTRIQUES)