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Thomas Edison ; 1889
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| Number | Title | Issue Date |
| 7387616 | Safe medical needle apparatus A safe medical needle apparatus, including a needle duct having a needle head, a needle seat, in which the needle tail is installed; a safe protecting shell and a biasing part through which the needle duct can pass; A protuberant stop portion, which is provided on t... | 06/17/2008 |