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Stefan Sponagel (2)
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1989 (2)
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Patent (2)
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Fachbereich Medizintechnik und Technomathematik (2)
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Method for manufacturing a sealing ring : United States Patent 4,861,536 ; date of patent: Aug. 12, 1989 / assignee: Firma Carl Freudenberg. Inventors: Gunter Graf ; Heinz Gross ; Stefan Sponagel
(1989)
Stefan Sponagel
;
Günter Graf
;
Heinz Groß
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