String stretching tool
The ornamental design for a string stretching tool, as shown and described.
Filed: Apr 20, 2010
Date of Patent: Jun 5, 2012
Inventors: Duane E. Baron (Ventura, CA), Robert W. MacNair, II (Ventura, CA), Jamie S. Letourneau (Sarnia)
Primary Examiner: Ian Simmons
Assistant Examiner: Carissa C Fitts
Attorney: G. Donald Weber, Jr.
Application Number: 29/349,653