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Patents Grantslast 30 patents

Information Patent Grant
Protective helmet having nose passage closure elements
- Patent number 4,667,667
- Issue date May 26, 1987
- Dr/a/ gerwerk AG
- Christian Schnoor
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Cycle respirator for pressure operation
- Patent number 4,667,669
- Issue date May 26, 1987
- Dr/a/ gerwerk AG
- Adalbert Pasternack
- A62 - LIFE-SAVING FIRE-FIGHTING