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Publication of AT384451BpublicationCriticalpatent/AT384451B/de
E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
E02B15/02—Cleaning or keeping clear the surface of open water; Apparatus therefor from ice otherwise than according to E02B1/003
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AT335385A1985-11-181985-11-18Verfahren zur eisfreihaltung von uferverbauten und gewaessereinbauten und vorrichtung zur durchfuehrung des verfahrens
AT384451B
(de)