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公开(公告)号:US2649073A
公开(公告)日:1953-08-18
申请号:US17356050
申请日:1950-07-13
Applicant: SMITH REUBEN E
Inventor: SMITH REUBEN E
IPC: A01J1/00
CPC classification number: A01J1/00
公开(公告)号:US2649073A
公开(公告)日:1953-08-18
申请号:US17356050
申请日:1950-07-13
Applicant: SMITH REUBEN E
Inventor: SMITH REUBEN E
IPC: A01J1/00
CPC classification number: A01J1/00