David P. M. Stewart

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Auckland, NZ

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Patents Grantslast 30 patents

Information Patent Grant
Humidifiers with control systems to prevent condensation
- Patent number 5,529,060
- Issue date Jun 25, 1996
- Fisher & Paykel Limited
- Andrew P. M. Salmon
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Methods of and/or apparatus for humidifying gases
- Patent number 4,708,831
- Issue date Nov 24, 1987
- Fisher & Paykel Limited
- Adrian J. Elsworth
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE