Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D352008 | Housing for an adjustable timer | — | 1994-11-01 |
| D347064 | Housing for an oxygen respirator | — | 1994-05-17 |
| 5291881 | Air cleaning cartridge for a gas mask and breathing equipment with an insert | Gunther Kolbe, Stephan Melzer, Hasso Weinmann | 1994-03-08 |