William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Application No. | Application Title | Issue Date |
| 20060160635 | Training apparatus for golf swing The invention relates to a training apparatus (1) for optimizing a golf swing. The apparatus consists of at least one guide ring, which is positioned on a plane that is inclined in relation to the vertical by means of a support. The apparatus is characterized in ... | 07/20/2006 |
| 20060128492 | Golf trainer A golf trainer (1) has a ground-engaging base (2) supporting a rail assembly (3) and a carriage (50) for guiding a golf club (typically a putter). Foot guides (12, 13) are of thin planar construction, having curved front edges and are ... | 06/15/2006 |
| 20050176519 | System, method, and apparatus for athletic swing training A system for swing training including a swing plane component defining a predefined plane around an athlete, a planar guidance component configured to guide a striking member along the predefined plane, and a securing member configured to couple the planar guidance comp... | 08/11/2005 |