Patent
   D311412
Priority
May 19 1987
Filed
May 19 1987
Issued
Oct 16 1990
Expiry
Oct 16 2004
Assg.orig
Entity
unknown
6
4
n/a
The ornamental design for a combined grand piano keyboard cover and auto-play control unit, as shown and described.

FIG. 1 is a perspective view of a combined grand piano keyboard cover and auto-play control unit showing my new design;

FIG. 2 is a top plan view of the combined cover and auto-play unit;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a right side elevational view thereof.

The broken lines showing of a grand piano are for illustrative purposes only and forms no part of the claimed design.

Ohta, Kunio

Patent Priority Assignee Title
10937405, May 11 2020 Foldable piano keyboard
D382006, Oct 19 1995 Yamaha Corporation Electronic piano
D519544, Mar 30 2004 Yamaha Corporation Lid of keyboard instrument
D760832, Nov 04 2014 Piano
D797839, Nov 20 2014 ZENGAFONS KFT Piano
D809057, May 22 2015 Steinway, Inc. Grand piano
Patent Priority Assignee Title
3969970, Nov 08 1974 LOF GLASS, INC Transparent grand piano tops
D248993, Feb 17 1976 Cover for organ keyboard
D255366, Aug 24 1977 Nippon Gakki Seizo Kabushiki Kaisha Electric piano, or the like
D256130, Apr 17 1978 Nippon Gakki Seizo Kabushiki Kaisha Electric piano, or the like
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Mar 09 1987OHTA, KUNIONIPPON GAKKI SEIZO KABUSHIKI KAISHA, A CORP OF JAPANASSIGNMENT OF ASSIGNORS INTEREST 0047310106 pdf
May 19 1987Nippon Gakki Seizu Kabushiki Kaisha(assignment on the face of the patent)
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