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公开(公告)号:US2861008A
公开(公告)日:1958-11-18
申请号:US39823153
申请日:1953-12-14
Applicant: FREDERICK POST COMPANY
Inventor: HOLLMANN WALTER G
IPC: G03C1/52
CPC classification number: G03C1/52
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公开(公告)号:US2154506A
公开(公告)日:1939-04-18
申请号:US12964637
申请日:1937-03-08
Applicant: FREDERICK POST COMPANY
Inventor: HINMAN WALKER M , HOLLMANN WALTER G
IPC: G03C1/64
CPC classification number: G03C1/64
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3.Manufacture of transparentized sheets for drawing, tracing, and copy reproduction 失效
Title translation: 制造用于绘图,追踪和复印的透明纸公开(公告)号:US2323469A
公开(公告)日:1943-07-06
申请号:US28337639
申请日:1939-07-08
Applicant: FREDERICK POST COMPANY
Inventor: HINMAN WALKER M , HOLLMANN WALTER G
IPC: G03F1/68
CPC classification number: G03F1/68 , Y10S428/914 , Y10T442/2254
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