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Note K - Equipment and Leasehold Improvements (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
2020
   
2019
 
                 
Equipment
  $
789,760
    $
648,286
 
Furniture and fixtures
   
164,079
     
164,079
 
Software
   
32,045
     
32,045
 
Leasehold improvements
   
25,135
     
23,403
 
     
1,011,019
     
867,813
 
                 
                 
Less accumulated depreciation and amortization
   
(929,226
)
   
(772,304
)
                 
Total
  $
81,793
    $
95,509