Pietro Lunardi

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20121 Milano, IT

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Patents Grantslast 30 patents

Information Patent Grant
Method for widening road, superhighway or railway tunnels, without...
- Patent number 6,375,390
- Issue date Apr 23, 2002
- Pietro Lunardi
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method for building large span tunnels by means of a cellular arch
- Patent number 4,929,123
- Issue date May 29, 1990
- Pietro Lunardi
- E21 - EARTH DRILLING MINING