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公开(公告)号:US2772785A
公开(公告)日:1956-12-04
申请号:US45032154
申请日:1954-08-17
Applicant: KRAMER LEWIS L
Inventor: KRAMER LEWIS L
IPC: A01J11/06
CPC classification number: A01J11/06
公开(公告)号:US2772785A
公开(公告)日:1956-12-04
申请号:US45032154
申请日:1954-08-17
Applicant: KRAMER LEWIS L
Inventor: KRAMER LEWIS L
IPC: A01J11/06
CPC classification number: A01J11/06