Tarmo Niinivaara

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Koria, FI

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method to shut down a pipeline
- Patent number 6,408,944
- Issue date Jun 25, 2002
- AB Grundstenen (Metal Patent WHSS AB)
- Juhani Niinivaara
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus for land, sea, and air defense
- Patent number 6,408,763
- Issue date Jun 25, 2002
- Sea Valve Engineering Oy
- Tero Hurtta
- F42 - AMMUNITION BLASTING