A device for the conversion of tractors with driving behind wheels in tractors with four wheel drive

• 1. 带后轮驱动的手扶拖拉机 [P] . 中国专利： CN2477450Y . 2002.02.20
• 2. 一种带驾驶室翻转功能的可前后四轮驱动拖拉机 [P] . 中国专利： CN210338084U . 2020.04.17
• 3. A device for the conversion of tractors with driving behind wheels in tractors with four wheel drive [P] . 德国专利： DE2405718A1 . 1974-10-10

  机译： 四轮驱动拖拉机中带后轮驱动拖拉机的转换装置

• 4. CONVERSION OF A TWO WHEEL DRIVE TRACTOR TO A FOUR WHEEL DRIVE TRACTOR [P] . CA571598A . 1959-03-03

  机译： 将两轮驱动拖拉机转换为四轮驱动拖拉机

• 5. process for the conversion of a tractor to drive two rear wheels in a four wheel drive tractor [P] . 瑞士专利： CH331390A . 1958-07-15

  机译： 拖拉机转换为驱动四轮驱动拖拉机中的两个后轮的过程

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