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公开(公告)号：US1550695A
公开(公告)日：1925-08-25
申请号：US44017321
申请日：1921-01-26
Applicant: EASTERN MFG COMPANY
Inventor： HANSON HUGO H , WYLDE WILFRED A
IPC: D21F5/00
CPC classification number: D21F5/00
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