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公开(公告)号：US2241221A
公开(公告)日：1941-05-06
申请号：US26014439
申请日：1939-03-06
Applicant: MACWHYTE COMPANY
Inventor： BUSSELL WILLIAM C
IPC: F16G11/00
CPC classification number: F16G11/146 , Y10T403/4336
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