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公开(公告)号：US1767869A
公开(公告)日：1930-06-24
申请号：US31590028
申请日：1928-10-29
Applicant: NEWCOMB DAVID COMPANY INC
Inventor： BAUMGARTEN HUGO C
IPC: F24F11/00
CPC classification number: F24F11/0001
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