Ottestad; Nils T.

Follow

Organization

Tonsberg, NO

Organizations

Please log in for detailed analytics

Patents Grantslast 30 patents

Information Patent Grant
Double-acting valve system for underwater breathing or the like
- Patent number 4,711,263
- Issue date Dec 8, 1987
- Ottestad; Nils T.
- Nils T. Ottestad
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT