String for sport rackets
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 15, 2012
Grant Date -
Mar 31, 2011
app pub date -
Sep 28, 2009
filing date -
Sep 28, 2009
priority date (Note) -
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Abstract
A sport racket string includes a string which is a solid string and multiple recesses are defined in an outer surface of the string. The recesses include different sizes, depths and shapes, and are located in pre-determined ways such as lines so as to increase the friction between the balls and the string. The strings of the present invention are light in weight and allow the users to control the balls efficiently.
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