求科普：什么年代开始琴颈有内置钢筋调节的？

困S懵懂 · 发表于 2018-5-13 22:28:03

MaxMeng · 发表于 2018-5-14 07:05:54

The first truss rod patent was applied for by Thaddeus McHugh, an employee of the Gibson company, in 1921, though the idea of a "truss rod" appears in patents as early as 1908

https://en.wikipedia.org/wiki/Truss_rod

luoyunxuan007 · 发表于 2018-5-16 15:03:56

"truss rod" appears in patents as early as 1908
1908年出现

困S懵懂 · 发表于 2018-5-16 20:45:06

luoyunxuan007 发表于 2018-5-16 15:03
"truss rod" appears in patents as early as 1908
1908年出现

哦，谢谢！！

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[问题反馈] 求科普：什么年代开始琴颈有内置钢筋调节的？