Note 4 - Property and Equipment (Tables)
12 Months Ended
Mar. 31, 2022
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   

March 31.

   

March 31.

 
   

2022

   

2021

 

Machinery and equipment

  $ 199,810     $ 199,810  

Leasehold improvements

    3,750       3,750  
      203,560       203,560  
                 

Accumulated depreciation and amortization

    (203,560 )     (181,289 )
                 

Property and equipment, net

  $ -     $ 22,271