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FR2511806A1
(fr )
1983-02-25
Procede pour l'alimentation et la demagnetisation d'electro-aimants a courant continu de grande puissance
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BE486179A
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FR2595517A1
(fr )
1987-09-11
Alternateur a faible taux d'harmoniques
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US408887A
(en )
1889-08-13
James a
BE403405A
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FR2579843A1
(fr )
1986-10-03
Amplificateur audio frequences avec compensation du bruit ambiant, principalement pour l'automobile
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CH96690A
(de )
1922-11-01
Vorrichtung zur Wiedergabe von Tönen auf elektrischem Wege.
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