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Author
Stefan Sponagel (3)
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1993
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1992
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1990
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Patent
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German
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Wellendichtung : Offenlegungsschrift DE3830706A1 ; Veröffentlichungstag im Patentblatt: 22.03.1990 / Anmelder: Fa. Carl Freudenberg
(1990)
Stefan Sponagel
;
Waldemar Wachowitz
Wellendichtung : Europäische Patentschrift DE3621242C1 ; Veröffentlichungstag der Patentschrift : 06.06.1993 / Anmelder: Fa. Carl Freudenberg
(1993)
Stefan Sponagel
;
Waldemar Wachowitz
Shaft seal : United States Patent 5,143,385 ; date of patent: Sep. 1, 1992 / assignee: Firma Carl Freudenberg
(1992)
Stefan Sponagel
;
Waldemar Wachowitz
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