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公开(公告)号：US1994844A
公开(公告)日：1935-03-19
申请号：US46386630
申请日：1930-06-26
Applicant: HUFFMAN MFG COMPANY
Inventor： WINGER JOSEPH A , VAHLE EDGAR W
IPC: F01M11/04
CPC classification number: F01M11/04
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