Keyboard

The ornamental design for a keyboard, as shown.

FIG. 1 is a top, front, left perspective view of a keyboard showing my new design;

FIG. 2 is a top, rear, right perspective view thereof;

FIG. 3 is a bottom plan view on a reduced scale; and

FIG. 4 is a right side elevational view on a reduced scale.

The bottom of the keyboard is plain and unornamented.

Patent	Priority	Assignee	Title
10446129,	Apr 06 2016		Music control device and method of operating same
D302977,	Nov 18 1986	Nortel Networks Limited	Keyboard key arrangement
D304577,	Oct 22 1986	Motorola, Inc.	Alphanumeric encoding terminal or similar article
D307588,	May 23 1988	AG COMMUNICATION SYSTEMS CORPORATION, 2500 W UTOPIA RD , PHOENIX, AZ 85027, A DE CORP	Key unit housing for a telephone call processor
D340626,	Jan 16 1990		Stake for attachment to drip or related irrigation tubing
D486489,	Mar 28 2003	QYX LEARNING, INC	Wireless computer communicator
D815064,	Apr 05 2016	DASZ INSTRUMENTS INC	Music control device
D863257,	Apr 05 2016	DASZ INSTRUMENTS INC.	Music control device

Patent	Priority	Assignee	Title
3986014,	Jul 17 1972	Sharp Kabushiki Kaisha	Hood structure for electronic calculators
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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Feb 20 1983	LINDHE, PER O R	TELEFONAKTIEBOLAGET L M ERICSSON,A COMPANY OF SWEDEN	ASSIGNMENT OF ASSIGNORS INTEREST	004102	0706	pdf
Mar 02 1983		Telefonaktiebolaget LM Ericsson	(assignment on the face of the patent)

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