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Alan Peter Tye
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Tring, GB
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Patents Grants
last 30 patents
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Patent Grant
Ventilation cover
Patent number
D471971
Issue date
Mar 18, 2003
Flettner Ventilator Limited
Christopher John Hurlstone
D23 - Environmental heating and cooling
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Patent Grant
Ventilation rotor
Patent number
D471624
Issue date
Mar 11, 2003
Flettner Ventilator Limited
Christopher John Hurlstone
D23 - Environmental heating and cooling