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公开(公告)号：US1922029A
公开(公告)日：1933-08-15
申请号：US55238831
申请日：1931-07-22
Applicant: AJAX ELECTROTHERMIC CORP
Inventor： THEODORE CHESNUT FRANK
IPC: H05B6/24
CPC classification number: H05B6/24
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