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Julius E. Underwood et al
› Overview Abstract Drawings Description Claims
Patent number: 3248992
Filing date: Oct 6, 1964
Issue date: May 3, 1966
Inventors: Julius E. Underwood, Julius E. Underwood Current U.S. Classification: 84/436
View patent at USPTO Search USPTO Assignment Database Referenced by Citing Patent Filing date Issue date Original Assignee Title US4205583 Dec 12, 1977 Jun 3, 1980 CBS Inc. Keyboard construction for pianos US4418605 Jun 25, 1980 Dec 6, 1983 Pratt-Read Corporation Keyboard for musical instrument US7541532 Oct 3, 2006 Jun 2, 2009 Yamaha Corporation Key structure and keyboard apparatus US7652207 May 5, 2008 Jan 26, 2010 Yamaha Corporation Key structure and keyboard apparatus Drawings
Drawings Google Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send Feedback ©2012 Google +You Search Images Maps Play YouTube News Gmail Drive Calendar More
lauuuer º Patents View PDFDownload PDF KEYBOARD DEVICE
Julius E. Underwood et al
› Overview Abstract Drawings Description Claims
Patent number: 3248992
Filing date: Oct 6, 1964
Issue date: May 3, 1966
Inventors: Julius E. Underwood, Julius E. Underwood Current U.S. Classification: 84/436
View patent at USPTO Search USPTO Assignment Database Referenced by Citing Patent Filing date Issue date Original Assignee Title US4205583 Dec 12, 1977 Jun 3, 1980 CBS Inc. Keyboard construction for pianos US4418605 Jun 25, 1980 Dec 6, 1983 Pratt-Read Corporation Keyboard for musical instrument US7541532 Oct 3, 2006 Jun 2, 2009 Yamaha Corporation Key structure and keyboard apparatus US7652207 May 5, 2008 Jan 26, 2010 Yamaha Corporation Key structure and keyboard apparatus Drawings
Drawings Google Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send Feedback ©2012 Google
