Note 6 - Inventory - Major Classes of Inventory (Details) - USD ($)	Feb. 28, 2021	Nov. 30, 2020	Nov. 30, 2019
Raw materials	$ 7,647,204		$ 7,086,367
Work in process	239,754		304,009
Finished goods	3,665,851		3,777,136
Total Gross Inventory	11,552,809		11,167,512
Less: Reserves	(3,650,565)		(3,405,112)
Net Inventory	$ 7,902,244	$ 7,762,400	$ 7,762,400

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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