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| Number | Title | Issue Date |
| 6783443 | Polishing machine for stone materials, having multiple grinding heads aligned on two oscillating and parallel beams with variable offset The polishing machine for stone materials comprises: a conveyor belt for the slabs or strips to be polished, a beam made to oscillate on at least two transverse, fixed frames above the said conveyor, at least one oscillating mechanism, a number of polishing heads, a... | 08/31/2004 |
