Search Images Maps Play YouTube News Gmail Drive More »
Advanced Patent Search | Web History | Sign in

Patents

Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US502230220 Feb 199011 Jun 1991Damper mechanism for upright piano
US61946432 Sep 199927 Feb 2001Key actuation systems for keyboard instruments
US644488521 Dec 20003 Sep 2002Key actuation systems for keyboard instruments
US678104630 Jan 200124 Aug 2004Key actuation systems for keyboard instruments
US688805224 May 20023 May 2005Key actuation systems for keyboard instruments
US743942615 Feb 200621 Oct 2008Actuation system for keyboard pedal lyre
US748579820 Jul 20063 Feb 2009Yamaha CorporationKeyboard apparatus

Drawings