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Hans H. Timmer
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Erkrath, DE
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last 30 patents
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Patent Grant
System for tempering spaces of a building
Patent number
4,993,630
Issue date
Feb 19, 1991
Ingenieurburo Timmer GmbH
Wolfgang Reichel
F24 - HEATING RANGES VENTILATING
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Patent Grant
System for controlling the temperature of rooms
Patent number
4,683,941
Issue date
Aug 4, 1987
Ingenieurburo Timmer GmbH
Hans H. Timmer
F24 - HEATING RANGES VENTILATING