CHUNG; Soung Whan
Patent Applications and Registrations
Patent applications and USPTO patent grants for CHUNG; Soung Whan.The latest application filed is for "output circuit of vacuum-tube amplifier".
- CHUNG; Soung Whan - Jeonbuk KR
| Patent | Date |
|---|---|
| Output Circuit Of Vacuum-tube Amplifier App 20090224825 - CHUNG; Soung Whan | 2009-09-10 |
| Output Circuit Of Vacuum-tube Amplifier App 20090224826 - CHUNG; Soung Whan | 2009-09-10 |
| Output circuit of vacuum-tube amplifier Grant 7,583,140 - Chung September 1, 2 | 2009-09-01 |
| Output circuit of vacuum-tube amplifier Grant 7,583,141 - Chung September 1, 2 | 2009-09-01 |
| Output circuit of vacuum-tube amplifier Grant 7,355,475 - Chung April 8, 2 | 2008-04-08 |
| Output Circuit Of Vacuum-tube Amplifier App 20080042744 - Chung; Soung Whan | 2008-02-21 |
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