Joseph Hapel

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Seine Maritime, FR

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Patents Grantslast 30 patents

Information Patent Grant
Pressed blocks for interlocked assembly
- Patent number 4,262,463
- Issue date Apr 21, 1981
- Bureau d'Etudes Techniques J. Hapel & Cie Ingenieurs Conseils Chillou
- Joseph Hapel
- E04 - BUILDING