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公开(公告)号:FR2683066B1
公开(公告)日:1996-07-12
申请号:FR9113125
申请日:1991-10-23
Applicant: BOUYGUES SA
Inventor: ARISTAGHES PIERRE
IPC: G08G1/09 , G09F19/22 , G08B5/36 , E01F9/10 , G03H1/00