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公开(公告)号:US2410878A
公开(公告)日:1946-11-12
申请号:US50264643
申请日:1943-09-16
Applicant: B B CHEM CO
Inventor: HARRINGTON VALENTINE F
IPC: A43D11/00
CPC classification number: A43D11/00
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公开(公告)号:US2237429A
公开(公告)日:1941-04-08
申请号:US24394338
申请日:1938-12-05
Applicant: B B CHEM CO
Inventor: HARRINGTON VALENTINE F
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公开(公告)号:US2651119A
公开(公告)日:1953-09-08
申请号:US78315447
申请日:1947-10-30
Applicant: B B CHEM CO
Inventor: HARRINGTON VALENTINE F
IPC: A43D11/00
CPC classification number: A43D11/003
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