A device for the storage of stacked characters or otherwise aids, such as triangles, angle measurement devices, straight guides and the like.

• 1. 用于PCB字符的打印控制方法、装置、设备及存储介质 [P] . 中国专利： CN110605917B . 2021.03.16
• 2. 用于字符识别的方法、电子设备和存储介质 [P] . 中国专利： CN113537225A . 2021-10-22
• 3. Characters triangle and / or angle measurement devices, in particular for use on a ceiling board [P] . 德国专利： DE19681297T1 . 1998-03-19

  机译： 三角形和/或角度测量设备的字符，特别是用于天花板的字符

• 4. Characters triangle with angle measurement devices [P] . 德国专利： DE949030C . 1956-09-13

  机译： 带有角度测量装置的字符三角形

• 5. Characters triangle with angle measurement devices. [P] . 德国专利： DE1681113U . 1954-08-05

  机译： 带有角度测量装置的字符三角形。

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• 8. Wind tunnel research comparing lateral control devices, particularly at high angles of attack VIII : straight and skewed ailerons on wings with rounded tips [R] . Weick, Fred E, Shortal, Joseph A 1933

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