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CLIMATISATION PAR PUITS CANADIENS
| CLIMATISATION PAR PUITS CANADIENS Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20100200192 | BURIED VERTICAL THREADED EXCHANGER FOR HEATING OR COOLING APPARATUS - A hollow pile suitable for being sunk substantially vertically into the soil by screw-sinking, said hollow pile being characterized in that it has: at least one helical fin ( | 08-12-2010 |