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Keywords: Sieveking quivering apparatus for piano 1898-03-06.jpg en A mechanical device invented by Dutch pianist Martinus Sieveking that will make a piano or other stringed instruments to make a quivering tone Patented in Austria no 105519 on 1898-03-06 2012-09-07 05 04 51 Internet Image is in public domain in the US published in Austria in 1898 Martinus Sieveking PD-Art Uploaded with UploadWizard Martinus Sieveking Music diagrams German text |