Note 3 - Inventories - Major Classes of Inventory (Details) - USD ($)	Nov. 30, 2020	Nov. 30, 2019
Raw materials	$ 7,086,367	$ 7,156,001
Work in process	304,009	492,125
Finished goods	3,777,136	3,905,373
Total Gross Inventory	11,167,512	11,553,499
Less: Reserves	(3,405,112)	(2,774,992)
Net Inventory	$ 7,762,400	$ 8,778,507

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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