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公开(公告)号：US2659303A
公开(公告)日：1953-11-17
申请号：US6370348
申请日：1948-12-06
Applicant: DITTO INC
Inventor： WARREN QUIRK ROBERT
IPC: B41L23/02
CPC classification number: B41L23/02
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公开(公告)号：US2721514A
公开(公告)日：1955-10-25
申请号：US39019953
申请日：1953-11-04
Applicant: DITTO INC
Inventor： WARREN QUIRK ROBERT
IPC: B41L11/00
CPC classification number: B41L11/00
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