3.
    发明专利
    未知

    公开(公告)号:FR1525872A

    公开(公告)日:1968-05-24

    申请号:FR06007647

    申请日:1965-08-30

    Applicant: IBM FRANCE

    Abstract: 1,179,448. Automatic exchange systems. INTERNATIONAL BUSINESS MACHINES CORP. 9 June, 1967 [21 June, 1966], No. 26662/67. Addition to 1,115,520. Heading H4K. The path seeking apparatus of the parent Specification is modified as a result of a more economical expression of the logical functions employed; the logic circuits which examine path co-ordinates, in search of conflict between existing paths and proposed paths, are consequently simplified considerably.

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