1 9 3 0 , ▁and ▁remained ▁in ▁K uri ya . ▁After ▁her ▁husband ' s ▁death ▁in ▁ 1 9 3 0 , ▁Aleks andra ▁Fro lov na ▁married ▁E f rem ▁Kos ach , ▁a ▁wid ower ▁who ▁had ▁three ▁children ▁of ▁his ▁own . ▁ ▁Mik h ail ▁Kal ash nik ov ▁married ▁twice , ▁the ▁first ▁time ▁to ▁Ek ater ina ▁Dan il ov na ▁Ast akh ova ▁of ▁Al ta i ▁K rai . ▁He ▁married ▁the ▁second ▁time ▁to ▁Ek ater ina ▁Vik tor ov na ▁Mo ise ye va ▁( 1 9 2 1 – 1 9 7 7 ). ▁She ▁was ▁an ▁engineer ▁and ▁did ▁much ▁technical ▁drawing ▁work ▁for ▁her ▁husband . ▁They ▁had ▁four ▁children : ▁daughters ▁N elli ▁( b . ▁ 1 9 4 2 ), ▁El ena ▁( b . ▁ 1 9 4 8 ) ▁and ▁Natal ya ▁( 1 9 5 3 – 1 9 8 3 ), ▁and ▁a ▁son ▁Victor ▁( 1 9 4 2 – 2 0 1 8 ). ▁Victor ▁also ▁became ▁a ▁prominent ▁small ▁arms ▁designer . ▁ ▁The ▁title ▁to ▁the ▁A K - 4 7 ▁tra dem ark ▁belonged ▁to ▁Mik h ail ▁Kal ash nik ov ' s ▁family ▁until ▁ 4 ▁April ▁ 2 0 1 6 , ▁when ▁the ▁Kal ash nik ov ▁Conc ern ▁won ▁a ▁law suit ▁to ▁invalid ate ▁the ▁registration ▁of ▁the ▁tra dem ark . ▁ ▁We ap on ▁designs ▁ ▁During