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公开(公告)号：US2503884A
公开(公告)日：1950-04-11
申请号：US74329347
申请日：1947-04-23
Applicant: NOBLE CHARLES S , NOBLE GERALD C , NOBLE SHIRLEY F
Inventor： NOBLE CHARLES S , NOBLE GERALD C , NOBLE SHIRLEY F
IPC: A01B35/26
CPC classification number: A01B35/26
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公开(公告)号：US2607279A
公开(公告)日：1952-08-19
申请号：US74329447
申请日：1947-04-23
Applicant: NOBLE CHARLES S , NOBLE GERALD C , NOBLE SHIRLEY F
Inventor： NOBLE CHARLES S , NOBLE GERALD C , NOBLE SHIRLEY F
IPC: A01B35/26
CPC classification number: A01B35/26
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