Steuerwald; Manfred
Patent Applications and Registrations
Patent applications and USPTO patent grants for Steuerwald; Manfred.The latest application filed is for "transfer film having magnetic layers".
- Steuerwald; Manfred - Frankenthal DE
| Patent | Date |
|---|---|
| Transfer film having magnetic layers Grant 5,264,292 - Kovacs , et al. November 23, 1 | 1993-11-23 |
| Document identification employing exchange-anisotropic magnetic material Grant 4,438,462 - Koester , et al. March 20, 1 | 1984-03-20 |
| Document authentication by means of exchange-anisotropic magnetic material Grant 4,396,886 - Koester , et al. August 2, 1 | 1983-08-02 |
| Magnetic recording media Grant 3,996,407 - Gross , et al. December 7, 1 | 1976-12-07 |
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