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Note 3 - Revenue From Contracts With Customers - Accounts Receivable (Details) - USD ($) | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Accounts receivable | $ 791,707 | $ 1,117,862
Billed Revenues [Member] | Government Sector [Member] |  |
Accounts receivable | 790,446 | 1,110,001
Billed Revenues [Member] | Commercial and Industrial Sector [Member] |  |
Accounts receivable | 0 | 6,600
Unbilled Revenues [Member] |  |
Accounts receivable | $ 1,261 | $ 1,261

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