Company:  NATURAL GAS SERVICES GROU ... (NGS)
Form Type:  SC 13G/A
Filing Date:  2/13/2012 
CIK:  0001084991 
Address:  508 WEST WALL STREET
SUITE 550 
City, State, Zip:  MIDLAND, Texas 79701 
Telephone:  432-262-2700 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$21.95   		Change: 
-0.03 (-0.14%)  
Trade Time: 
04:04 PM EST   		Market Cap: 
$271.46M
Description of Business
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  FORM SC 13G/A
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