Device for locking of keys as well as for solve get caught and back which comes next previous types lever of typewriters

• 1. 在无线通信系统中指示用于下一个消息的承载类型的方法和设备 [P] . 中国专利： CN110431873A . 2019-11-08
• 2. 用于通过在游戏云系统上执行的视频记录访问先前所存储游戏情节的方法和系统 [P] . 中国专利： CN109792564A . 2019-05-21
• 3. Auxiliary device for the bending of the types the lever and the application of the types on the types lever of typewriters [P] . 德国专利： DE687973C . 1940-02-09

  机译： 打字杆弯曲的辅助装置以及打字机在打字杆上的应用

• 4. A Method of and Device for Adjusting the Type Levers and for Soldering Type to the Type Levers of Typewriters. [P] . 英国专利： GB190522447A . 1906-03-29

  机译： 一种用于调节打字机的杠杆并将其焊接至打字机的杠杆的方法和装置。

• 5. Device for the blocking of the types lever to the lower sheet limitation on typewriters od. The like. [P] . 德国专利： DE1772043U . 1958-08-14

  机译： 用于将类型控制杆锁定到打字机od的下限纸张的装置。类似。

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• 5. Design of driving lever air suction type seed metering device [O] . Xiao Wang, Xiao-Rong Lü, Lin He, 2018
• 6. Study on the Identification of Systems in Typewriters -- Guide to the Identification of Typewriter Systems on the Basis of the 'Elite' Type. [R] . 1960

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