Metal hardness test block with circular targets connected by alphanumeric grid lines

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Description

FIG. 1 is an isometric view showing the top, right side, and front of the metal hardness test block with circular targets connected by alphanumeric grid lines.

FIG. 2 is a top plan view of the metal hardness test block circular targets connected by alphanumeric grid lines.

FIG. 3 is a bottom view of the metal hardness test block with circular targets connected by alphanumeric grid lines.

FIG. 4 is a left end view of the metal hardness test block with circular targets connected by alphanumeric grid lines.

FIG. 5 is a right end view of the metal hardness test block with circular targets connected by alphanumeric grid lines.

FIG. 6 is a front view of metal hardness test block with circular targets connected by alphanumeric grid lines; and,

FIG. 7 is a rear view of the metal hardness test block with circular targets connected by alphanumeric grid lines.

Claims

I claim the ornamental design for a metal hardness test block with circular targets connected by alphanumeric grid lines, as shown in the accompanying drawings.

Referenced Cited
U.S. Patent Documents
D304427 November 7, 1989 Biddle
5505094 April 9, 1996 Parsons
D611855 March 16, 2010 Minagawa
D689388 September 10, 2013 Berme
D689389 September 10, 2013 Berme
D722900 February 24, 2015 Biddle
20080072656 March 27, 2008 Conner
20110136239 June 9, 2011 Hehn
Patent History
Patent number: D790378
Type: Grant
Filed: Dec 22, 2015
Date of Patent: Jun 27, 2017
Inventor: William O. Knight (Malvern, PA)
Primary Examiner: Antoine D Davis
Application Number: 29/549,381