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公开(公告)号：US2803346A
公开(公告)日：1957-08-20
申请号：US43219954
申请日：1954-05-25
Applicant: DAVID WESTON , MACPHERSON ARTHUR R
Inventor： DAVID WESTON , MACPHERSON ARTHUR R
IPC: B03B4/02
CPC classification number: B03B4/02
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22.发明授权Closed circuit air swept rotating drum material reduction system with air drawoff todust collector and air entry control means adjacent mill inlet 失效闭路空气旋转滚筒材料还原系统，带空气抽风式集尘器和空气进入控制装置，相邻磨机进口
公开(公告)号：US2674413A
公开(公告)日：1954-04-06
申请号：US25339951
申请日：1951-10-26
Applicant: DAVID WESTON
Inventor： DAVID WESTON
IPC: B02C21/00
CPC classification number: B02C21/00
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公开(公告)号：US2555171A
公开(公告)日：1951-05-29
申请号：US74913147
申请日：1947-05-20
Applicant: DAVID WESTON
Inventor： DAVID WESTON
IPC: B02C17/18
CPC classification number: B02C17/18
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