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1.发明授权Shadow mask mounting brackets moving mask toward screen with radial mask expansion 失效阴影面罩安装支架移动面罩带有辐射面罩扩展的屏幕
公开(公告)号：US3524971A
公开(公告)日：1970-08-18
申请号：US3524971D
申请日：1967-01-11
Applicant: NAT VIDEO CORP
Inventor： SCHWARTZ JAMES W , JAVORIK LASLO J
CPC classification number: H01J29/073
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