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公开(公告)号:US681879A
公开(公告)日:1901-09-03
申请号:US1900039782
申请日:1900-12-13
Applicant: WILCOX MFG COMPANY
Inventor: FERGUSON CHARLES H
CPC classification number: B24B23/024
公开(公告)号:US681879A
公开(公告)日:1901-09-03
申请号:US1900039782
申请日:1900-12-13
Applicant: WILCOX MFG COMPANY
Inventor: FERGUSON CHARLES H
CPC classification number: B24B23/024