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Note 4 - Equipment Loan (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Mar. 20, 2021
Sep. 30, 2022
Sep. 30, 2022
Sep. 30, 2021
Repayments of Long-Term Debt, Total     $ 40,872 $ 26,446
Debit Arrangement to Finance Purchase of Output Solutions Sorter [Member]        
Debt Instrument, Face Amount $ 165,996      
Debt Instrument, Term (Month) 36 months      
Debt Instrument, Interest Rate, Stated Percentage 3.95%      
Debt Instrument, Periodic Payment, Total $ 4,902      
Repayments of Long-Term Debt, Total   $ 13,762 $ 40,872