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Note 3 - Share Based Compensation (Tables)
9 Months Ended
Sep. 30, 2015
Notes Tables  
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]
 
 
Three
Months
Ended
September
30,
 
 
Three
Months
Ended
September
30,
 
 
 
2015
 
 
2014
 
                 
Selling, general and administrative
  $ 30,779     $ 32,700  
Research, development and engineering
    5,271       5,364  
    $ 36,050     $ 38,064  
 
 
Nine Months
Ended
September 30,
 
 
Nine Months
Ended
September 30,
 
 
 
2015
 
 
2014
 
                 
Selling, general and administrative
  $ 218,653     $ 144,616  
Research, development and engineering
    39,644       25,666  
    $ 258,297     $ 170,282