Verdal Maskinverksted A/S

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for counterflow air to air generative heat exchange and v...
- Patent number 4,665,805
- Issue date May 19, 1987
- Verdal Maskinverksted A/S
- Heinz Ekman
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Means for recovering heat from a room space, and for ventilation
- Patent number 4,493,366
- Issue date Jan 15, 1985
- Verdal Maskinverksted A/S
- Heinz Ekman
- F24 - HEATING RANGES VENTILATING

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