专利名称：Screw
小王子童话故事发明人：Jui-T Hsieh,Chiu-Yueh Wang
申请号：US11405409
申请日：20060418
公开号：US20070224020A1
公开日：
思开头的成语20070927
专利内容由知识产权出版社提供
专利附图：人工智能学校
摘要：A screw includes an enlarged head and a threaded shank longitudinally extending from said head; said head has a bottom surface with a plurality of ribs protruded therefrom so as to provide with high frictional resistance and waterproof effect when screwing in. Further, the ratio of the outer diameter of head to the outer
英语师范专业diameter of shank is 1:3.5˜5.5. Accordingly the head has greater areas to cover the ejected debris of object so as to maintain clean appearance.
申请人：Jui-T Hsieh,Chiu-Yueh Wang民法基本原则
良善地址：Sinshih Township TW,Gangshan Town TW
走廊用英语怎么说>训练方法
国籍：TW,TW
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