Note 6 - Inventory - Major Classes of Inventory (Details) - USD ($)	Feb. 29, 2020	Nov. 30, 2019	Feb. 28, 2019
Raw materials		$ 7,156,001	$ 7,576,968
Work in process		492,125	332,668
Finished goods		3,905,373	4,042,034
Gross inventory		11,553,499	11,951,670
Less: Reserves		(2,774,992)	(2,637,241)
Net Inventory	$ 9,314,429	$ 8,778,507	$ 9,314,429

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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