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公开(公告)号：US3480967A
公开(公告)日：1969-12-02
申请号：US3480967D
申请日：1967-03-17
Applicant: OLIN MATHIESON
Inventor： HANFORD WILLIAM E , LAW WILLIAM E
IPC: A42B1/12
CPC classification number: A42B1/12
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