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DE123670C
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DE277970C
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DE305393C
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DE67471C
(de )
Selbsttätiger Ausschalter
DE28337C
(de )
1884-09-10
Elektrische bogenlampen
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DE283874C
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DE3711410C2
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1990-04-26
DE680705C
(de )
1939-09-05
Antrieb fuer Eisenbahnsicherungseinrichtungen
DE449404C
(de )
1927-09-13
Elektrischer Schalter fuer veraenderliche Schaltung
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DE273144C
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DE32919C
(de )
1885-09-17
Elektrische bogenlampen
DE371552C
(de )
1923-03-16
Amperestundenzaehler fuer Gleichstrom
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AT93428B
(de )
1923-07-10
Elektrischer Belastungsregler.
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DE14395C
(de )
Neuerungen an elektrischen Lampen
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