Patent search ap:("KOREA ELECTRONICS TELECOMM") AND inv:"RO GENFUKU" Page 1

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发明专利
GEOMETRICAL FORMATION OF DIFFRACTION GRATING 失效

公开(公告)号：JPS63287801A

公开(公告)日：1988-11-24

申请号：JP10421388

申请日：1988-04-28

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KIN SHINKON , BOKU HEIZEN , RO GENFUKU

IPC: G02B5/18 , G03C5/00 , G03F7/00 , G03F7/26

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