File:Truss rod patent.png
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Patent of T. McHugh for a guitar truss rod (1921).
The patent is available here (after free subscription : http://www.freepatentsonline.com/1446758.pdf or http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=1,446,758.PN.&OS=PN/1,446,758&RS=PN/1,446,758)
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current | 11:15, 27 September 2016 | 2,490 × 1,650 (55 KB) | Cmdrjameson (talk | contribs) | Compressed with pngout. Reduced by 178kB (76% decrease). | |
22:10, 29 September 2007 | 2,490 × 1,650 (233 KB) | Dake~commonswiki (talk | contribs) | Patent of T. McHugh for a guitar truss rod (1921). The patent is available here (after free subscription : http://www.freepatentsonline.com/1446758.pdf - it does not seem to be available on http://patft.uspto.gov/) From {{US patent|1,446,758}} {{PD-US- |
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