DE2850869
BURKHARDT, HANS-JOACHIM, 5305 ALFTER, DE, SUHRKAMP, FRITZ, 5309 MECKENHEIM, DE
Year of Publication 13.05.1982
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Year of Publication 13.05.1982
Patent
DE2850869
BURKHARDT, HANS-JOACHIM, 5305 ALFTER, DE, SUHRKAMP, FRITZ, 5309 MECKENHEIM, DE
Year of Publication 06.08.1981
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Year of Publication 06.08.1981
Patent