Mertsi Niemela

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Patents Grantslast 30 patents

Information Patent Grant
Procedure for controlling and maintaining air currents or equivalen...
- Patent number 5,071,065
- Issue date Dec 10, 1991
- Halton Oy
- Erkki Aalto
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Method for regulation of ventilation as well as an air-conditioning...
- Patent number 5,031,515
- Issue date Jul 16, 1991
- Halton Oy
- Mertsi Niemela
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Procedure and means for controlling volumetric flow rate in air-con...
- Patent number 4,934,397
- Issue date Jun 19, 1990
- Halton Oy
- Mertsi Niemela
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Ventilation control procedure and ventilation control means
- Patent number 4,903,894
- Issue date Feb 27, 1990
- Halton Oy
- Teuvo Pellinen
- F24 - HEATING RANGES VENTILATING