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Note 4 - Share Based Compensation
3 Months Ended
Mar. 31, 2017
Notes to Financial Statements  
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
4.
SHARE BASED COMPENSATION
 
The following table presents share-based compensation expenses for continuing operations included in the Company’s unaudited condensed consolidated statements of operations:
 
 
 
Three Months Ended March 31,
 
 
 
2017
 
 
2016
 
                 
                 
Selling, general and administrative
  $
112,856
    $
145,878
 
Research, development and engineering
   
48,233
     
28,485
 
    $
161,089
    $
174,363