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Note 5 - Fixed Assets (Tables)
6 Months Ended
Dec. 31, 2020
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
 
 
 
As of
   
As of
 
   
Estimated
   
December 31,
   
June 30,
 
   
Useful Lives in years
   
2020
   
2020
 
Manufacturing equipment
 
2
-
5
    $
112,000
    $
112,000
 
Leasehold improvements
 
3
     
111,000
     
229,000
 
Office equipment, furniture and other
 
2
-
5
     
281,000
     
312,000
 
Lab equipment
 
3
-
5
     
90,000
     
90,000
 
Less accumulated depreciation and amortization
 
 
     
(504,000
)    
(484,000
)
Fixed assets, net
 
 
    $
90,000
    $
259,000