Company:  MATTSON TECHNOLOGY INC (MTSN)
Form Type:  SC 13G
Filing Date:  2/13/2012 
CIK:  0000928421 
Address:  47131 BAYSIDE PARKWAY 
City, State, Zip:  FREMONT, California 94538 
Telephone:  510 657 5900 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$2.05   		Change: 
0.21 (11.41%)  
Trade Time: 
May 17   		Market Cap: 
$120.64M
Description of Business
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  FORM SC 13G
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