Schwanenberg; Sigurd
Patent Applications and Registrations
Patent applications and USPTO patent grants for Schwanenberg; Sigurd.The latest application filed is for "self-closing closure and closure membrane relating to same".
- Schwanenberg; Sigurd - Lucerne CH
- Schwanenberg; Sigurd - Luzern CH
| Patent | Date |
|---|---|
| Self-closing closure and closure membrane relating to same Grant 6,367,668 - Schwanenberg April 9, 2 | 2002-04-09 |
| Closure membrane and closure employing same Grant 6,213,355 - Schwanenberg April 10, 2 | 2001-04-10 |
| Self-closing seal with a sealing membrane Grant 6,095,381 - Schwanenberg August 1, 2 | 2000-08-01 |
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