Patent search ap:("GEN ELECTRIC") AND inv:"STRONG HERBERT M" Page 3

21.

发明授权
Apparatus for making optical wedges 失效

公开(公告)号：US2603133A

公开(公告)日：1952-07-15

申请号：US6502848

申请日：1948-12-13

Applicant: GEN ELECTRIC

Inventor： STRONG HERBERT M

IPC: G02B5/20 , G03C5/02

CPC classification number: G02B5/205 , G03C5/02

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