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公开(公告)号：US2898855A
公开(公告)日：1959-08-11
申请号：US50265855
申请日：1955-04-20
Applicant: DAYTON RUBBER COMPANY
Inventor： RICHTER RAYMOND R
CPC classification number: B41F31/04 , B41F35/04 , B41P2231/12
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公开(公告)号：US2786413A
公开(公告)日：1957-03-26
申请号：US39265553
申请日：1953-11-17
Applicant: DAYTON RUBBER COMPANY
Inventor： RICHTER RAYMOND R
IPC: B41F35/04
CPC classification number: B41F35/04
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