Note 6 - Inventories - Major Classes of Inventory (Details) - USD ($)	Feb. 28, 2019	Nov. 30, 2018
Raw materials	$ 7,751,489	$ 7,825,278
Work in process	419,070	272,302
Finished goods	4,896,854	5,051,330
Gross inventory	13,067,413	13,148,910
Less: Reserves	(2,858,728)	(2,891,808)
Net Inventory	$ 10,208,685	$ 10,257,102

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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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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