...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Application No. | Application Title | Issue Date |
| 20050103281 | Sweat scraper A sweat scraper includes a core made of a first resilient material defining a scraper blade and a handle. A sheath made of a second resilient material substantially surrounds the side edges of the core and defines a continous border around the scraper blade edges. The f... | 05/19/2005 |