David W. Hawes

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Mortimer, Reading, Berks, GB

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Patents Grantslast 30 patents

Information Patent Grant
Fire sprinklers with frangible body closing a flow passage and sepa...
- Patent number 4,896,728
- Issue date Jan 30, 1990
- Thomas Bolton & Johnson Limited
- Heinz S. Wolff
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information Patent Grant
Method and apparatus for taking samples from or administering medic...
- Patent number 4,784,157
- Issue date Nov 15, 1988
- Justin A. T. Halls
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Syringe
- Patent number 4,747,838
- Issue date May 31, 1988
- Heinz S. Wolff
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE