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Michel M. Grapin
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Le Chesnay, FR
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last 30 patents
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Patent Grant
Heat insulating means for piping subjected to thermal, hydrostatic...
Patent number
4,660,861
Issue date
Apr 28, 1987
Hutchinson S.A.
Gilles Argy
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...