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公开(公告)号：US3015475A
公开(公告)日：1962-01-02
申请号：US77813558
申请日：1958-12-04
Applicant: PHILIPS CORP
Inventor： JAN MEIJER ROELF , LEONARDUS HERMANS MATTHIAS
IPC: F02G1/055
CPC classification number: F02G1/055 , Y10S165/358
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