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公开(公告)号:US2152096A
公开(公告)日:1939-03-28
申请号:US17793937
申请日:1937-12-03
Applicant: MACWHYTE COMPANY
Inventor: RUSSELL WILLIAM C
CPC classification number: B66C1/12 , F16G11/146
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公开(公告)号:US2354280A
公开(公告)日:1944-07-25
申请号:US48298143
申请日:1943-04-14
Applicant: MACWHYTE COMPANY
Inventor: RUSSELL WILLIAM C
IPC: F16G11/00
CPC classification number: F16G11/146 , Y10T403/4336 , Y10T403/4983
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公开(公告)号:US2100569A
公开(公告)日:1937-11-30
申请号:US4384735
申请日:1935-10-07
Applicant: MACWHYTE COMPANY
Inventor: RUSSELL WILLIAM C
IPC: B63B21/20
CPC classification number: B63B21/20 , Y10T403/4336
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