Apparatus for surface treatment by impact
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United States of America Patent
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Feb 5, 2002
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N/A
app pub date -
Mar 20, 2000
filing date -
Mar 23, 1999
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Abstract
The invention relates to apparatus for surface treatment by impact, the apparatus comprising a vibrating surface and at least one projectile suitable for being projected towards the surface to be treated by said vibrating surface. The apparatus includes retaining means for keeping each projectile captive in the apparatus.
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