Non-return valve for a plastication screw
EICHLSEDER, MARTIN, 8399 TETTENWEIS, DE, ZAHNER, PETER, 8035 GAUTING, DE
Year of Publication 18.02.1988
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Year of Publication 18.02.1988
Patent
DE2855918
PFEIFFER, ULRICH, 8501 PUSCHENDORF, DE, ZAHNER, PETER, 8502 ZIRNDORF, DE
Year of Publication 04.02.1982
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Year of Publication 04.02.1982
Patent