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1.发明授权
公开(公告)号：US2892336A
公开(公告)日：1959-06-30
申请号：US48517855
申请日：1955-01-31
Applicant: AMBROGIO PENSOTTI
Inventor： AMBROGIO PENSOTTI
IPC: D01D10/04
CPC classification number: D01D10/0445
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