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公开(公告)号：US3382785A
公开(公告)日：1968-05-14
申请号：US51070965
申请日：1965-11-30
Applicant: LEONARD J. MELHART
Inventor： MELHART LEONARD J
IPC: G03B9/08
CPC classification number: G03B9/08
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公开(公告)号：US3379997A
公开(公告)日：1968-04-23
申请号：US35330664
申请日：1964-03-19
Applicant: LEONARD J. MELHART
Inventor： MELHART LEONARD J
CPC classification number: H01S3/093 , H01J61/00 , H01J2893/0063
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