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Note 6 - Property and Equipment
 12 Months Ended
Dec. 31, 2020
Notes to Financial Statements  
Property, Plant and Equipment Disclosure [Text Block]
6.
           
Property and Equipment
 
A summary of property and equipment at
December 31, 2020
and
2019,
consist of the following:
 
   
2020
    
2019
  
Furniture and equipment
   $
75,747
     $
75,747
  
Computer equipment and software
    
291,925
      
227,378
  
Leasehold improvements
    
6,814
      
6,814
  
Subtotal
    
374,486
      
309,939
  
Less: accumulated depreciation and amortization
    
(312,320
 )    
(300,258
 )
Total
   $
62,166
     $
9,681
  
 
Depreciation and amortization expense for the years ended
December 31, 2020
and
2019,
was
$12,062
and
$5,834,
respectively.