Polytechnisches Journal, Volume 38; Volume 238

Front Cover
J. G. Cotta, 1880 - Technology
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Contents

Weyher und Richemonda preisgekrönte CompoundMaschine von Walther
8
Selbstthätiger CylinderSicherheitshahn von T J Paradine in Erie Pa
16
Selbstthätiges Entluftungsventil für Dampfleitungen von J Haag
22

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