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公开(公告)号:US691029A
公开(公告)日:1902-01-14
申请号:US1901055270
申请日:1901-04-10
Applicant: WEBER EDWARD
Inventor: WEBER EDWARD
CPC classification number: D06F75/08
公开(公告)号:US691029A
公开(公告)日:1902-01-14
申请号:US1901055270
申请日:1901-04-10
Applicant: WEBER EDWARD
Inventor: WEBER EDWARD
CPC classification number: D06F75/08