DE281057C
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CH655258A5
(de )
1986-04-15
Verfahren zur herstellung eines kessels, insbesondere fuer transformatoren.
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DE2637605C2
(de )
1986-04-17
Wärmeaustauscher
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(de )
Gliederkessel
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(de )
Wasservorwärmer
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DE1751364C
(de )
1971-11-25
Strahlungsüberhitzer für einen Dampferzeuger