Wiper mechanism for the ends of gum-coated suction-tubes. |
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申请号 | US9420416 | 申请日 | 1916-04-28 | 公开(公告)号 | US1229511A | 公开(公告)日 | 1917-06-12 |
申请人 | PETERS MELVILLE E; FATH GEORGE H; MILLER ALBERT F; | 发明人 | PETERS MELVILLE E; FATH GEORGE H; MILLER ALBERT F; | ||||
摘要 | |||||||
权利要求 | |||||||
说明书全文 |