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公开(公告)号：US1773984A
公开(公告)日：1930-08-26
申请号：US24150027
申请日：1927-12-21
Applicant: VOLNEY FOSTER
Inventor： VOLNEY FOSTER
IPC: F26B17/16
CPC classification number: F26B17/16 , F26B2200/14
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