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Note 3 - Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($)
Mar. 31, 2023
Dec. 31, 2022
Payroll and related costs $ 125,483 $ 195,803
Professional and consulting 0 3,685
Royalties 40,075 40,075
Accrued cost of revenues 159,414 168,657
Sales tax 22,228 22,228
Other 410 410
Total $ 347,610 $ 430,858