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公开(公告)号：US3277806A
公开(公告)日：1966-10-11
申请号：US37083664
申请日：1964-05-28
Applicant: LEITZ ERNST GMBH
Inventor： ADAM WAGNER , KREIS WETZLAR , ERWIN NEURATH
IPC: G03B9/42
CPC classification number: G03B9/42
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