Sprengers; Leo M.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Sprengers; Leo M..The latest application filed is for "arrangement including a metal vapor discharge tube provided with at least two internal electrodes".
- Sprengers; Leo M. - Eindhoven NL
- Sprengers; Leo M. - Grobbendonk BE
| Patent | Date |
|---|---|
| Arrangement including a metal vapor discharge tube provided with at least two internal electrodes Grant 4,636,691 - de Man , et al. January 13, 1 | 1987-01-13 |
| Method of manufacturing a heat-reflecting filter Grant 4,401,693 - Frank , et al. August 30, 1 | 1983-08-30 |
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