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公开(公告)号：US1386046A
公开(公告)日：1921-08-02
申请号：US14010717
申请日：1917-01-02
Applicant: AMERICAN OPTICAL CORP
Inventor： BISHOP FRED M
IPC: C09J193/00
CPC classification number: C09J193/00
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公开(公告)号：US1287793A
公开(公告)日：1918-12-17
申请号：US16665017
申请日：1917-05-05
Applicant: AMERICAN OPTICAL CORP
Inventor： TILLYER EDGAR D , BISHOP FRED M
CPC classification number: B21B1/22 , Y10T29/301 , Y10T29/49812
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