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公开(公告)号:US3437807A
公开(公告)日:1969-04-08
申请号:US3437807D
申请日:1968-04-08
Applicant: FORNEY ENG CO
Inventor: MOORE WILLIAM J
CPC classification number: H01J47/00
公开(公告)号:US3437807A
公开(公告)日:1969-04-08
申请号:US3437807D
申请日:1968-04-08
Applicant: FORNEY ENG CO
Inventor: MOORE WILLIAM J
CPC classification number: H01J47/00