Michele Maffei

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Pistoia, IT

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Patents Grantslast 30 patents

Information Patent Grant
Slide rule and indicator which can also be combined with boxes for...
- Patent number 6,393,707
- Issue date May 28, 2002
- Promo Service di Michele Maffei & C. S.A.S.
- Michele Maffei
- G06 - COMPUTING CALCULATING COUNTING