CS222578B1 - Jelectronic device for automatic maintaining the volume and sound balance of electric music instruments and sound apparatus
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Jelectronic device for automatic maintaining the volume and sound balance of electric music instruments and sound apparatus
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Application filed by Rostislav DolnicekfiledCriticalRostislav Dolnicek
Priority to CS791381ApriorityCriticalpatent/CS222578B1/cs
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CS791381A1981-10-281981-10-28Jelectronic device for automatic maintaining the volume and sound balance of electric music instruments and sound apparatus
CS222578B1
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