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公开(公告)号:US1021321A
公开(公告)日:1912-03-26
申请号:US1910585136
申请日:1910-10-03
Applicant: MAST JOSEPH F
Inventor: MAST JOSEPH F
CPC classification number: A01D45/025
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公开(公告)号:US1196258A
公开(公告)日:1916-08-29
申请号:US2428515
申请日:1915-04-27
Applicant: MAST JOSEPH F
Inventor: MAST JOSEPH F
CPC classification number: A01D45/025
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