Modular precast concrete unit for a storm water detention or retention system

The ornamental design for a modular precast concrete unit for a storm water detention or retention system, as shown and described.

FIG. 1 is a perspective view of a modular precast concrete unit for a storm water detention or retention system showing my new design;

FIG. 2 is a side view thereof, the opposite and each side view being the same;

FIG. 3 is a top view thereof; and,

FIG. 4 is a bottom view thereof.

Patent	Priority	Assignee	Title
10513834,	Mar 22 2017		Modular block retaining wall construction system with channels and methods of manufacture and use
D855834,	Feb 08 2017		Block insert
D866798,	Feb 02 2018		Modular block

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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
May 13 2013	VON HANDORF, JEFFREY J	Structure Sight LLC	ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS	030447	0001	pdf
May 13 2013	VON HANDORF, JEFFREY J	Structure Sight LLC	CORRECTIVE ASSIGNMENT TO CORRECT THE RECEIVING PARTY ADDRESS PREVIOUSLY RECORDED AT REEL: 030447 FRAME: 0001 ASSIGNOR S HEREBY CONFIRMS THE ASSIGNMENT	035551	0762	pdf
May 20 2013		Structure Sight LLC	(assignment on the face of the patent)

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