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Note 7 - Disposal Group Assets Held for Sale (Tables)
9 Months Ended
Sep. 30, 2020
Notes Tables  
Disposal Groups, Including Discontinued Operations [Table Text Block]
    September 30, 2020
Cash   $
100,367
 
Prepaid expenses    
143,836
 
Property and equipment, net    
1,080
 
Patents, net    
458,738
 
ROU and other assets    
195,517
 
Disposal group assets held for sale   $
899,538
 
         
Accounts payable and accrued expenses   $
166,373
 
Lease liabilities    
159,439
 
Disposal group liabilities associated with assets held for sale   $
325,812