DE2030529
STEIN, WERNER- . DR., 4006 ERKRATH, HARTMANN, HELMUT. DR., 4018 LANGENFELD
Year of Publication 17.07.1980
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Year of Publication 17.07.1980
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DE2053257
HARTMANN, HELMUT. DR., 4018 LANGENFELD, STEIN, WERNER. DR., 4006 ERKRATH- UNTERBACH
Year of Publication 10.01.1980
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Year of Publication 10.01.1980
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DE2030529
STEIN, WERNER- . DR., 4006 ERKRATH, HARTMANN, HELMUT. DR., 4018 LANGENFELD
Year of Publication 25.10.1979
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Year of Publication 25.10.1979
Patent
DE2053257
HARTMANN, HELMUT. DR., 4018 LANGENFELD, STEIN, WERNER. DR., 4006 ERKRATH- UNTERBACH
Year of Publication 26.04.1979
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Year of Publication 26.04.1979
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