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Note 4 – Marketable Securities (Details Narrative) | Jul. 31, 2023 USD ($)
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Investments, Debt and Equity Securities [Abstract] |
[custom:CorporateBondsAtCarryingValueFairValue-0] | $ 7,922,392
[custom:CorporateBondsAtCarryingValueCostBasis-0] | 8,497,168
[custom:CorporateBondsAtCarryingValueUnrealizedLosses-0] | 574,776
[custom:CorporateBondsAtCarryingValueContractualMaturities2-0] | $ 7,922,392

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