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Publication numberUSD301687 S
Publication typeGrant
Application numberUS 06/805,102
Publication dateJun 20, 1989
Filing dateNov 13, 1985
Publication number06805102, 805102, US D301687 S, US D301687S, US-S-D301687, USD301687 S, USD301687S
InventorsBruce A. Cassidy, James O. Gray
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Mine roof support plate
US D301687 S
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  1. The ornamental design for a mine roof support plate, substantially as shown and described.

FIG. 1 is a perspective view of a mine roof support plate showing our new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a right side view relative to FIG. 2.

FIG. 5 is a front view relative to FIG. 2;

FIG. 6 is a cross-sectional view taken in the direction of the arrows on line 6--6 of FIG. 2;

FIG. 7 is a cross-sectional view taken in the direction of the arrows on line 7--7 of FIG. 2;

The left side view is identical to the right side view, and the rear view is identical to the front view.

Non-Patent Citations
1Brochure entitled: "Keeping the Roof Over Your Head", published by Keystone Bolt Company, Copyright 1979.
2Brochure entitled: "Tazewell Underground Roof Control Products and Services", published by Tazewell Industries (undated).
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6270290Aug 27, 1999Aug 7, 2001Jennmar CorporationTensionable cable bolt
US6957931Jul 14, 2003Oct 25, 2005Slater Bert WRoof bolt bearing plate and method for an underground mine
U.S. ClassificationD08/399, D08/353