Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Aug. 31, 2022	Aug. 31, 2021
Cash flows from operations:
Net income (loss)	$ 6,403	$ (194,692)
Adjustments to reconcile net income (loss) to net cash used by operating activities:
Stock based compensation	224,291	203,245
Decrease in obsolete inventory reserves	(210,397)	(485,073)
(Gain) Loss on disposal of property, plant, and equipment	3,971	(7,998)
Depreciation and amortization expense	546,642	453,697
Accrued interest on deferred debt payments	12,774	12,720
Decrease in allowance for doubtful accounts	(3,684)	(10,593)
Deferred income taxes	(720)	(58,843)
Changes in assets and liabilities:
Accounts receivable	(1,153,449)	(554,351)
Inventories	(1,079,093)	(1,041,390)
Net investment in sales-type leases		28,352
Other assets	(82,165)	(213,955)
Accounts payable	798,008	228,455
Contracts in progress, net	4,797	(58,695)
Customer deposits	1,022,464	506,107
Income taxes payable	0	3,900
Accrued expenses	107,822	(58,634)
Net cash provided by (used in) operating activities	197,663	(1,247,748)
Cash flows from investing activities:
Purchases of property, plant, and equipment	(1,187,793)	(487,515)
Net proceeds from sale of assets	9,300	8,000
Net cash used in investing activities	(1,178,493)	(479,515)
Cash flows from financing activities:
Net borrowings in line of credit	484,470	1,930,500
Principal payments on finance lease obligations	(74,608)
Proceeds from term debt	350,000
Repayment of term debt	(74,098)	(67,444)
Proceeds from common stock purchase agreement	431,408	0
Cost of equity issuance	(42,425)	0
Repurchases of common stock	(92,432)	(30,471)
Net cash provided by financing activities	982,316	1,832,585
Net increase in cash	1,486	105,322
Cash at beginning of period	2,658	2,684
Cash at end of period	4,144	108,006
Supplemental disclosures of cash flow information:
Interest	277,488	190,764
Income taxes	800	2,869
Supplemental disclosures of non-cash operating activities:
Right-of-use (ROU) assets acquired (included in other assets)	698,153	0
Less: Cash proceeds received under Manufacturing 4.0 grant applied to ROU Assets - Note 13	(224,513)	0
Total (ROU) assets acquired (included in other assets)	473,640	0
Market value of commitment shares issued under purchase agreement	$ 160,000	$ 0