Yoon; Duk Chea
Patent Applications and Registrations
Patent applications and USPTO patent grants for Yoon; Duk Chea.The latest application filed is for "optical mouse for computer".
- Yoon; Duk Chea - Kyungki-do KR
- Yoon; Duk Chea - Suwon KR
- Yoon; Duk Chea - Suwon-Si KR
| Patent | Date |
|---|---|
| Optical mouse for computer Grant D487,464 - Yoon , et al. March 9, 2 | 2004-03-09 |
| Wireless keyboard Grant D462,681 - Yoon September 10, 2 | 2002-09-10 |
| Floppy disk drive Grant D462,073 - Yoon August 27, 2 | 2002-08-27 |
| Ear-microphone for cellular phones Grant D430,860 - Yoon September 12, 2 | 2000-09-12 |
| Ear-microphone for cellular phones Grant D430,547 - Yoon September 5, 2 | 2000-09-05 |
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