Openwork; e.g., truss, trellis, grille, screen, frame, or rebar chair > Spacer-positioner; e.g., rebar chair > Penetrator with limiting stop > Penetrating leg traversing separate stop > Block-type stop > Patents - Class: 52/683

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Class Information
Number: 52/683
Name: Static structures (e.g., buildings) > Openwork; e.g., truss, trellis, grille, screen, frame, or rebar chair > Spacer-positioner; e.g., rebar chair > Penetrator with limiting stop > Penetrating leg traversing separate stop > Block-type stop
Description: Structure in which the stop or spacer is a mass of material whose depth is substantial relative to its longitudinal and lateral dimensions.

Patents under this class:

Patent Number	Title Of Patent	Date Issued
7441731	Support block system	Oct. 28, 2008
4642960	Prefabricated building panel and method of making the same	Feb. 17, 1987

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