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公开(公告)号：US1371797A
公开(公告)日：1921-03-15
申请号：US37327320
申请日：1920-04-12
Applicant: MCCANDLESS ALVA C , HARRIS DANIEL L
Inventor： MCCANDLESS ALVA C , HARRIS DANIEL L
IPC: F02P15/04
CPC classification number: F02P15/04 , F02B2275/22
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