device for clocks with gewichtstriebwerk to hold the head in a full aufwinden the string.

• 1. 一种可以固定琴头琴弦的琴枕 [P] . 中国专利： CN208141808U . 2018.11.23
• 2. 一种可自动松紧琴弦的吉他琴头 [P] . 中国专利： CN205645227U . 2016.10.12
• 3. device for electrical steckkontakten to hold the string. [P] . 瑞士专利： CH201736A . 1938-12-15

  机译： 电子steckkontakten的设备来固定琴弦。

• 4. Clock hold circuit attaching clocking device [P] . 日本专利： JP2642779B2 . 1997-08-20

  机译： 时钟保持电路附加时钟装置

• 5. Wideband sample=and=hold circuit - has two sample=and=hold paths between input and output buffers and switching devices operated by divided clock signal [P] . 德国专利： DE4134123A1 . 1992-04-16

  机译： 宽带采样保持电路-在输入和输出缓冲器以及由分频时钟信号操作的开关设备之间具有两条采样保持路径

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