Note 6 - Inventory - Major Classes of Inventory (Details) - USD ($)	May 31, 2020	Nov. 30, 2019
Raw materials	$ 7,400,831	$ 7,156,001
Work in process	393,939	492,125
Finished goods	4,315,166	3,905,373
Gross inventory	12,109,936	11,553,499
Less: Reserves	(2,577,225)	(2,774,992)
Net Inventory	$ 9,532,711	$ 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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