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Note 8 - Inventories - Inventories (Details) - USD ($)
Dec. 31, 2021
Dec. 31, 2020
Raw materials $ 1,249,000 $ 842,000
Work in Process 2,492,000 2,645,000
Finished Goods 4,425,304 4,095,977
Allowance for excess quantities (290,000) (311,000)
Total inventories $ 7,876,304 $ 7,271,977