Torsion spring for outdoor fitness equipment
The broken lines illustrate portions of the article that form no part of the claimed design.
Claims
The ornamental design for a torsion spring for outdoor fitness equipment, as shown and described.
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Type: Grant
Filed: Jun 13, 2014
Date of Patent: Sep 1, 2015
Inventor: John P Mathiesen (Shoreview, MN)
Primary Examiner: Robert M Spear
Assistant Examiner: Ryan Harvey
Application Number: 29/493,872