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Note 6 - Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)
Dec. 31, 2021
Dec. 31, 2020
Intangible assets $ 691,974 $ 749,501
Less Accumulated amortization (357,231) (269,441)
Intangible assets, net 334,743 480,060
Customer Relationships [Member]    
Intangible assets 502,957 544,770
Patents [Member]    
Intangible assets $ 189,017 $ 204,731