Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Nov. 30, 2022	Nov. 30, 2021
Cash flows from operations:
Net income	$ 97,797	$ 212,631
Adjustments to reconcile net income to net cash used in operating activities:
Stock based compensation	287,721	265,541
Decrease in obsolete inventory reserves	(214,413)	(638,633)
Gain on disposal of property, plant, and equipment	(154,112)	(17,935)
Depreciation and amortization expense	807,163	613,409
Accrued interest on deferred debt payments	16,917	16,982
Decrease in allowance for doubtful accounts	(3,489)	(12,987)
Deferred income taxes	16,491	45,800
Changes in assets and liabilities:
Accounts receivable	(55,779)	(259,439)
Inventories	(1,187,036)	(809,070)
Net investment in sales-type leases	0	28,352
Other assets	2,064	(59,887)
Accounts payable	893,875	(218,313)
Contracts in progress, net	(226,342)	(116,723)
Customer deposits	550,056	80,284
Income taxes payable	(2,000)	4,400
Accrued expenses	122,808	(120,266)
Net cash provided by (used in) operating activities	951,721	(985,854)
Cash flows from investing activities:
Purchases of property, plant, and equipment	(1,747,351)	(620,284)
Net proceeds from sale of assets	403,504	20,807
Net cash used in investing activities	(1,343,847)	(599,477)
Cash flows from financing activities:
Net change in line of credit	(150,030)	1,715,000
Principal payments on finance lease obligations	(116,193)	(9,046)
Proceeds from term debt	350,000	0
Repayment of term debt	(99,926)	(90,179)
Proceeds from common stock purchase agreement	545,529	0
Cost of equity issuance	(42,425)	0
Repurchases of common stock	(92,432)	(30,470)
Net cash provided by financing activities	394,523	1,585,305
Net increase (decrease) in cash	2,397	(26)
Cash at beginning of period	2,658	2,684
Cash at end of period	5,055	2,658
Supplemental disclosures of cash flow information:
Interest	421,241	270,616
Income taxes	2,365	1,675
Supplemental disclosures of non-cash investing and financing activities:
Right-of-use (ROU) assets acquired (included in other assets)	698,153	219,937
Less: Cash proceeds received under Manufuacturing 4.0 grant applied to ROU Assets - Note 13	(224,513)	0
Total (ROU) assets acquired (included in other assets)	473,640	219,937
Amortization of operating lease ROU assets (included in other assets)	12,862	0
Market value of commitment shares issued under purchase agreement	$ 160,000	$ 0