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v3.22.1

Note 4 - Liquidity (Details Textual) - USD ($) | 12 Months Ended |
--- | --- | ---
Jan. 31, 2022 | Apr. 21, 2022
Lease Equipment, Available for Sale | $ 700,000 |
Preferred Stock, Shares Available for Issuance (in shares) | 317,000 |
Common Stock, Shares Available for Issuance (in shares) | 13,800,000 |
Working Capital (Deficit) | $ 18,500,000 |
Cash, Ending Balance | 5,100,000 |
Unbilled Contracts Receivable | 13,100,000 |
Proceeds from Issuance or Sale of Equity, Total | $ 5,200,000 |
Subsequent Event [Member] |  |
Unbilled Contracts Receivable |  | $ 23,600,000
Subsequent Event [Member] | Firm Orders [Member] |  |
Unbilled Contracts Receivable |  | 5,700,000
Subsequent Event [Member] | RFQs [Member] |  |
Unbilled Contracts Receivable |  | $ 4,800,000

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