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公开(公告)号：US1862656A
公开(公告)日：1932-06-14
申请号：US45602330
申请日：1930-05-27
Applicant: WARREN S D CO
Inventor： SYLVESTER BOYER
IPC: D21G1/00
CPC classification number: D21G1/0093 , Y10T29/473
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公开(公告)号：US2051403A
公开(公告)日：1936-08-18
申请号：US46826030
申请日：1930-07-16
Applicant: WARREN S D CO
Inventor： SYLVESTER BOYER , PARMENTER LE CLARE F
CPC classification number: D21H25/08 , D21H5/0062
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