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Note 6 - Commitments and Contingencies (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2022
Details |  |
Lessee Operating Lease For Parking Lot Adjustment To Lease Payments Required Every Five Years Based On Change In CPI | $ 670,000 |
Standard and Extended Product Warranty Accrual | $ 0 | $ 0

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