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公开(公告)号:US847274A
公开(公告)日:1907-03-12
申请号:US1906297520
申请日:1906-01-23
Applicant: WILLIAM C ROSS
Inventor: BELKNAP ELLSWORTH
CPC classification number: F16C33/36
公开(公告)号:US847274A
公开(公告)日:1907-03-12
申请号:US1906297520
申请日:1906-01-23
Applicant: WILLIAM C ROSS
Inventor: BELKNAP ELLSWORTH
CPC classification number: F16C33/36