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Note 5 - Share Based Compensation
9 Months Ended
Sep. 30, 2019
Notes to Financial Statements  
Share-based Payment Arrangement [Text Block]
5.
SHARE BASED COMPENSATION
  
The following table presents share-based compensation expenses for continuing operations included in the Company’s unaudited interim condensed consolidated statements of operations:
 
   
Three Months
Ended
September 30,
   
Three Months
Ended
September 30,
 
   
201
9
   
201
8
 
                 
Selling, general and administrative
  $
121,999
    $
170,758
 
Research, development and engineering
   
15,102
     
25,588
 
    $
137,101
    $
196,346
 
 
 
   
Nine Months
Ended
September 30,
   
Nine Months
Ended
September 30,
 
   
201
9
   
201
8
 
                 
Selling, general and administrative
  $
690,612
    $
770,524
 
Research, development and engineering
   
103,577
     
125,297
 
    $
794,189
    $
895,821