SELF-EXCITATION SYSTEM OF GATE-TYPE WELDING GENERATOR von DIRZHIS S.A.,SU, PANFILOV N.A.,SU, VIDOMSKIJ M.I.,SU

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POWER SOURCE FOR ARC WELDING von STEJKUNAS R-I.I.,SU, YASUTIS V-A.A.,SU, PANFILOV N.A.,SU, KASPRZHAK G.M.,SU, KAROSAS I.I.,SU, SINDAROVSKAS K.YA.,SU, KAZAKEVICHUS CH.A.,SU

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DEVICE FOR RETAINING WORKING TOOL IN PERCUSSIVE TOOLS von PANFILOV S.A.,SU, VYSOTSKIJ I.F.,SU, LYSENKO L.L.,SU, KLUSHIN N.A.,SU, NEUSTROEV YU.A.,SU, ABRAMENKOV E.A.,SU

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