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公开(公告)号：US2130040A
公开(公告)日：1938-09-13
申请号：US5696035
申请日：1935-12-31
Applicant: MACWHYTE COMPANY
Inventor： SILER ROBERT W
IPC: B66B7/06
CPC classification number: B66B7/06 , Y10T24/3971 , Y10T24/45969 , Y10T403/4345
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