Flygstad; Dean W.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Flygstad; Dean W..The latest application filed is for "adjustable tension support band for headset".
- Flygstad; Dean W. - Apple Valley MN
- Flygstad; Dean W. - St. Paul MN
| Patent | Date |
|---|---|
| Adjustable tension support band for headset Grant 4,727,585 - Flygstad February 23, 1 | 1988-02-23 |
| Electret transducer and method of fabrication Grant 4,701,640 - Flygstad , et al. October 20, 1 | 1987-10-20 |
| Headset Grant 4,139,743 - Flygstad February 13, 1 | 1979-02-13 |
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