Ehrich; Hans-Jurgen
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ehrich; Hans-Jurgen.The latest application filed is for "method for producing printed circuits".
- Ehrich; Hans-Jurgen - Berlin DE
| Patent | Date |
|---|---|
| Method for producing printed circuits Grant 4,285,991 - Gedrat , et al. August 25, 1 | 1981-08-25 |
| Process for preparation of metal patterns on insulating carrier materials Grant 4,262,085 - Ehrich , et al. April 14, 1 | 1981-04-14 |
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