Keyboard instrument
Description
Claims
The ornamental design for a keyboard instrument, as shown and described.
Referenced Cited
U.S. Patent Documents
Other references
D173309 | October 1954 | Johnston |
D229228 | November 1973 | Barczak |
- Youtube. Alpha Piano ORF. Apr. 28, 2014 [earliest online date], [site visited Aug. 31, 2016]. Available from Internet, <URL:https://www.youtube.com/watch?v=HsUz-FPfNWU>.
- Design Boom. Touch sensitive mpiano by alpha pianos provides musicians with novel possibilities. May 8, 2016 [earliest online date], [site visited Aug. 31, 2016]. Available from Internet, <URL:http://www.designboom.com/technology/alpha-mpiano-piano-design-05-08-2016/>.
Patent History
Patent number: D783709
Type: Grant
Filed: Jun 18, 2015
Date of Patent: Apr 11, 2017
Assignee: Alpha Pianos GmbH (St. Andra-Wordern)
Inventor: Jorg Tragatschnig (Zell am See)
Primary Examiner: Robert M Spear
Assistant Examiner: Darcey E Heflin
Application Number: 29/530,613
Type: Grant
Filed: Jun 18, 2015
Date of Patent: Apr 11, 2017
Assignee: Alpha Pianos GmbH (St. Andra-Wordern)
Inventor: Jorg Tragatschnig (Zell am See)
Primary Examiner: Robert M Spear
Assistant Examiner: Darcey E Heflin
Application Number: 29/530,613
Classifications
Current U.S. Class:
Piano Or Cabinet Therefor (D17/7)