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公开(公告)号：US2126909A
公开(公告)日：1938-08-16
申请号：US13752837
申请日：1937-04-17
Applicant: MORRIS WARREN L , MORRIS KENNETH L , MORRIS GLENN E
Inventor： MORRIS WARREN L , MORRIS KENNETH L , MORRIS GLENN E
IPC: A01B29/04
CPC classification number: A01B29/041
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