The device of the portcullis articulated to blades of the seed drill

• 1. 固定夹在焊接在机动车构件上的连接装置上的布置结构以及用于制造固定夹在焊接在车辆构件上的连接装置上的布置结构的方法 [P] . 中国专利： CN113302405A . 2021-08-24
• 2. 带有冷空气分配叶片及连接在其上的辅助叶片的冰箱 [P] . 中国专利： CN1210245A . 1999-03-10
• 3. Portcullis articulated to the teeth can be oriented to blades of the seed drill [P] . 法国专利： FR1534713A . 1968-08-02

  机译： 铰接在牙齿上的Portcullis可以对准播种机的刀片

• 4. Portcullis special and its adapter device to a seed drill of the model any [P] . 法国专利： FR606839A . 1926-06-21

  机译： Portcullis special及其适配器设备，适用于任何型号的播种机

• 5. Articulated mounting of blades - drills of seeds to line so-called poquets intermittent [P] . 法国专利： FR407703A . 1910-03-09

  机译： 铰接式安装刀片-播种种子以间歇地插入所谓的poquets

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• 7. Construction of an Air Turbine Drilling Device and Test Equipment, and Preliminary Testing of Drilling Device: Final Technical Report, (August 28, 1984 to June 2, 1987) [R] . Flatland, L. 1987

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