Gustav Ospelt

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Vaduz, LI

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Patents Grantslast 30 patents

Information Patent Grant
Weatherproofing doors for the air intake opening of ventilating sys...
- Patent number 4,989,502
- Issue date Feb 5, 1991
- Hoval Interliz AG
- Gustav Ospelt
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Furnace for burning oil or gas
- Patent number 4,624,216
- Issue date Nov 25, 1986
- Hoval Interliz AG
- Gustav Ospelt
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Roof device for air conditioning
- Patent number 4,149,590
- Issue date Apr 17, 1979
- Interliz Anstalt
- Gustav Ospelt
- F24 - HEATING RANGES VENTILATING