Consolidated Balance Sheets - USD ($)	Nov. 30, 2021	Nov. 30, 2020
Current assets:
Cash	$ 2,658	$ 2,684
Accounts receivable-customers, net of allowance for doubtful accounts of $38,188 and $51,175 in 2021 and 2020, respectively	2,663,030	2,390,604
Inventories, net	9,210,103	7,762,400
Cost and profit in excess of billings	177,284	56,026
Net investment in sales-type leases, current	0	28,352
Other current assets	121,170	61,284
Total current assets	12,174,245	10,301,350
Property, plant, and equipment, net	5,237,328	5,218,662
Assets held for lease, net	521,555	521,555
Deferred income taxes	2,621,886	2,667,686
Other assets	299,034	93,760
Total assets	20,854,048	18,803,013
Current liabilities:
Accounts payable	1,737,091	1,955,404
Customer deposits	278,509	198,225
Billings in excess of cost and profit	280,761	276,226
Income taxes payable	5,500	1,100
Accrued expenses	1,210,964	1,279,312
Line of credit	4,074,530	2,359,530
Current portion of long-term debt	99,462	94,979
Total current liabilities	7,686,817	6,164,776
Long-term portion of finance lease liabilities	142,386	0
Long-term portion of operating lease liabilities	34,931	18,342
Long-term debt, excluding current portion	2,635,467	2,713,150
Total liabilities	10,499,601	8,896,268
Commitments and Contingencies (Notes 8, 9 and 15)
Stockholders’ equity:
Undesignated preferred stock - $0.01 par value. Authorized 500,000 shares in 2021 and 2020; issued and outstanding 0 shares in 2021 and 2020.	0	0
Common stock – $0.01 par value. Authorized 9,500,000 shares in 2021 and 2020; issued 4,583,504 in 2021 and 4,470,004 in 2020	45,835	44,700
Additional paid-in capital	3,760,649	3,496,243
Retained earnings	6,656,487	6,443,856
Treasury stock, at cost (44,532 in 2021 and 35,097 in 2020 shares)	(108,524)	(78,054)
Total stockholders’ equity	10,354,447	9,906,745
Total liabilities and stockholders’ equity	$ 20,854,048	$ 18,803,013