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公开(公告)号：US2491967A
公开(公告)日：1949-12-20
申请号：US78127147
申请日：1947-10-22
Applicant: GHANT ERNEST H
Inventor： GHANT ERNEST H
IPC: D01G15/20
CPC classification number: D01G15/20 , Y10S414/124
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