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Note 3 - Balance Sheet Components - Schedule of Property and Equipment (Details) - USD ($)
Mar. 31, 2024
Dec. 31, 2023
Total property and equipment $ 890,363 $ 890,363
Accumulated depreciation and amortization (700,250) (680,674)
Total property and equipment, net 190,113 209,689
Equipment and Furnishings [Member]    
Total property and equipment 774,758 774,758
Leasehold Improvements [Member]    
Total property and equipment $ 115,605 $ 115,605