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公开(公告)号:US3157102A
公开(公告)日:1964-11-17
申请号:US28393663
申请日:1963-05-28
Applicant: VICTOREEN INSTR COMPANY
Inventor: PFAFF WILLIAM A
IPC: G03B27/30
CPC classification number: G03B27/303
公开(公告)号:US3157102A
公开(公告)日:1964-11-17
申请号:US28393663
申请日:1963-05-28
Applicant: VICTOREEN INSTR COMPANY
Inventor: PFAFF WILLIAM A
IPC: G03B27/30
CPC classification number: G03B27/303