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BG42097A1
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Polishing means for magnetic disk bases
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BG41729A1
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Method for preparing cellulose
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BG41524A1
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Thyristor power source
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BG41545A1
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Material for preparing zeolite nu- 1
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BG41096A1
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Control device for executing mechanism
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BG40589A1
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Accessory means in neutral- sulphite leaching
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BG40377A1
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Composition of hard plates made of plant fibres
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BG40202A1
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Composition for hard plates made of wood fibres
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BG40093A1
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Composition of paper
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BG41009A1
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Device for dynamic control of thyristor power source
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BG41166A1
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Plastificier for power metallurcigal items
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BG40033A1
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Method and device for dynamic control of monophasic thyristor power source
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BG39737A1
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Somposition for delignifying of plant raw- materials
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BG39588A1
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Composition for hydrolyzing and delignifying of plant materials
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BG38674A1
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Device for control of thyristor current source
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BG38677A1
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Means for boiling of wood
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BG38736A1
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Composition of paper
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BG38974A1
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Device for automatic limiting of losses during idle stroke in welding transformer
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BG41014A1
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Radial pneumatic tube for personal cars
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BG38424A1
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Method for preparing cellulose
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