Bilfinger + Berger Bauaktiengesellschaft

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4753551 Sealing screen for waste dumpsExpiredDec 18, 86Jun 28, 88[B65G, B09B, E02B]
4666343 Protective construction for a platform installed in the open sea against the impact of floating objectsExpiredMay 02, 86May 19, 87[E02B]

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