David Freychet

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Le Havre, FR

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Patents Grantslast 30 patents

Information Patent Grant
Method and device for cleaning a tube in which a fluid-circulates,...
- Patent number 5,013,368
- Issue date May 7, 1991
- Compagnie de Raffinage et de Distribution Total France
- Pierre Maroy
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Device for maintaining in position one end of an element mounted fo...
- Patent number 4,848,446
- Issue date Jul 18, 1989
- Compagnie de Raffinage et de Distribution Total France
- David Freychet
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Device for positioning a rotatable element within a tube
- Patent number 4,781,245
- Issue date Nov 1, 1988
- Compagnie de Raffinage et de Distribution Total France
- David Freychet
- F28 - HEAT EXCHANGE IN GENERAL