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公开(公告)号:US2400991A
公开(公告)日:1946-05-28
申请号:US45972642
申请日:1942-09-25
Applicant: DITTO INC
Inventor: HESS ARTHUR L
CPC classification number: B65H3/0833 , B65H1/04 , B65H2801/21
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公开(公告)号:US2436888A
公开(公告)日:1948-03-02
申请号:US63817145
申请日:1945-12-29
Applicant: DITTO INC
Inventor: HESS ARTHUR L , DENYVEN HOWARD G
IPC: B42C9/00
CPC classification number: B42C9/0087 , Y10S462/90
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公开(公告)号:US2392031A
公开(公告)日:1946-01-01
申请号:US50842243
申请日:1943-10-30
Applicant: DITTO INC
Inventor: DENYVEN HOWARD G , HESS ARTHUR L , HESS EDWARD R
IPC: B42F17/00
CPC classification number: B42F17/00
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公开(公告)号:US2389854A
公开(公告)日:1945-11-27
申请号:US45972542
申请日:1942-09-25
Applicant: DITTO INC
Inventor: HESS ARTHUR L
IPC: B41F3/00
CPC classification number: B41F3/00
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5.Duplicating process and preparation of master copies for use therein 失效
Title translation: 复制过程和准备用于其中的主副本公开(公告)号:US2254483A
公开(公告)日:1941-09-02
申请号:US28176439
申请日:1939-06-29
Applicant: DITTO INC
Inventor: HESS ARTHUR L , JOHAN BJORKSTEN
IPC: B41M5/04
CPC classification number: B41M5/04
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