Building block

The ornamental design for a building block, as shown and described.

FIG. 1 is a front or back view of the building block, showing my new design;

FIG. 2 is a top view of the building block;

FIG. 3 is a right or left side view of the building block;

FIG. 4 is a bottom view of the building block; and,

FIG. 5 is a perspective view of the building block.

Patent	Priority	Assignee	Title
4633639,	Dec 05 1983		Construction block
5441362,	Sep 30 1993	The United States of America as represented by the Secretary of the Army	Concrete armor unit for protecting coastal and hydraulic structures and shorelines
5620280,	Sep 30 1993	U.S. Army Corps of Engineers as Represented by the Secretary of the Army	Concrete armor unit to protect coastal and hydraulic structures and shorelines
8132985,	Jan 31 2007	The United States of America as represented by the Secretary of the Army	Armor unit
D622863,	Sep 16 2009	D&T Catering Removals Ltd.	Prefabricated building part
D622864,	Sep 16 2009	D & T Catering Removals Ltd.	Prefabricated building part
D622865,	Sep 16 2009	D & T Catering Removals Ltd.	Prefabricated building part
D638501,	Sep 03 2010		Play block
D649201,	Sep 03 2010		Play block
D721141,	May 17 2011		Play block
D805206,	Dec 15 2014		Arm support
D963061,	May 31 2019	Ankyo Developmet Ltd.	Building block
D967284,	Dec 09 2019	Jason, Callender	Building block
D977590,	Apr 17 2021		Toy block
D977591,	Apr 17 2021		Toy block
D986337,	Jul 06 2021		Block stacking game piece
D986346,	May 27 2021		Toy block

Patent	Priority	Assignee	Title
3318062,
3546792,
3672110,
3759043,
4012881,	Dec 14 1973		Architectural modular elements for forming and-or completing monuments or like works of art
4379659,	Sep 05 1980	Waldormills Company Establishment	Building blocks
186372,

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