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公开(公告)号：US2816222A
公开(公告)日：1957-12-10
申请号：US55460055
申请日：1955-12-01
Applicant: PHILIPS CORP
Inventor： WIGBOLT EDENS JAN , JAN STOLK
CPC classification number: H03D7/08 , H03H7/0161 , H03J3/28
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2.发明授权
公开(公告)号：US2812433A
公开(公告)日：1957-11-05
申请号：US32931253
申请日：1953-01-02
Applicant: PHILIPS CORP
Inventor： JAN STOLK
IPC: H03D7/08
CPC classification number: H03D7/08
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