PNEUMATIC HAMMER
VARNELLO E.P.,SU, ABRAMENKO E.A.,SU, MASLAKOV P.A.,SU, GANZHIN L.A.,SU, LYSENKO L.L.,SU, TIMOFEEV G.F.,SU, KLUSHIN N.A.,SU, PETREEV A.M.,SU
Year of Publication 15.06.1978
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Year of Publication 15.06.1978
Patent