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公开(公告)号:US997565A
公开(公告)日:1911-07-11
申请号:US1910585767
申请日:1910-10-07
Applicant: LARSON JONAS A
Inventor: LARSON JONAS A
CPC classification number: D06F79/00
公开(公告)号:US997565A
公开(公告)日:1911-07-11
申请号:US1910585767
申请日:1910-10-07
Applicant: LARSON JONAS A
Inventor: LARSON JONAS A
CPC classification number: D06F79/00