Oettinger; Ruth R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Oettinger; Ruth R..The latest application filed is for "indicator for classroom control and education".
- Oettinger; Ruth R. - Albemarle NC
- Oettinger; Ruth R. - Albermarle NC
| Patent | Date |
|---|---|
| Indicator for classroom control and education Grant D265,100 - Oettinger June 22, 1 | 1982-06-22 |
| Educational aid for classroom use Grant 4,306,869 - Oettinger , et al. December 22, 1 | 1981-12-22 |
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