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公开(公告)号:US634721A
公开(公告)日:1899-10-10
申请号:US1899709656
申请日:1899-03-18
Applicant: DAVIS-DOUGLAS WILLIAM
Inventor: DAVIS-DOUGLAS WILLIAM
公开(公告)号:US634721A
公开(公告)日:1899-10-10
申请号:US1899709656
申请日:1899-03-18
Applicant: DAVIS-DOUGLAS WILLIAM
Inventor: DAVIS-DOUGLAS WILLIAM