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Note 6 - Share-based Compensation
9 Months Ended
Sep. 30, 2021
Notes to Financial Statements  
Share-based Payment Arrangement [Text Block]

6.

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,

 
  

2021

  

2020

 
         

Selling, general and administrative

 $47,694  $51,157 

Research, development and engineering

  10,356   3,073 
  $58,050  $54,230 

 

 

  

Nine Months

Ended

September 30,

  

Nine Months

Ended

September 30,

 
  

2021

  

2020

 
         

Selling, general and administrative

 $207,342  $632,793 

Research, development and engineering

  32,979   76,995 
  $240,321  $709,788