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Patent applications and USPTO patent grants for Lorentzen; John F..The latest application filed is for "textured golf club face".
Patent | Date |
---|---|
Textured Golf Club Face App 20110275451 - Chao; Bing-Ling ;   et al. | 2011-11-10 |
Golf club head weight reinforcement Grant 7,713,142 - Hoffman , et al. May 11, 2 | 2010-05-11 |
Movable weights for a golf club head App 20080280698 - Hoffman; Joseph H. ;   et al. | 2008-11-13 |
Golf club head weight reinforcement App 20080261717 - Hoffman; Joseph H. ;   et al. | 2008-10-23 |
Golf club head weight reinforcement Grant 7,419,441 - Hoffman , et al. September 2, 2 | 2008-09-02 |
Golf club head weight reinforcement App 20050209021 - Hoffman, Joseph H. ;   et al. | 2005-09-22 |
Racquet stringing machine Grant 5,568,921 - Lorentzen , et al. October 29, 1 | 1996-10-29 |
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