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(en )
2009-08-20
Constant voltage welder capacitor ripple current reduction method and system
FR2392763A1
(fr )
1978-12-29
Dispositif de circuit d'alimentation pour usinage electrique
FR2504834A1
(fr )
1982-11-05
Procede et circuit pour former des impulsions d'usinage par decharges electriques
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(fr )
1950-09-30
Appareillage statique pour le soudage de métaux de conductibilité thermique quelconque.
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CH284599A
(fr )
1952-07-31
Procédé de conversion d'un courant alternatif monophasé en impulsions de courant.
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1933-11-30
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