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公开(公告)号:US2973541A
公开(公告)日:1961-03-07
申请号:US71349158
申请日:1958-02-05
Applicant: MATTHEW BECK PETER
Inventor: MATTHEW BECK PETER
IPC: A61B1/253
公开(公告)号:US2973541A
公开(公告)日:1961-03-07
申请号:US71349158
申请日:1958-02-05
Applicant: MATTHEW BECK PETER
Inventor: MATTHEW BECK PETER
IPC: A61B1/253