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Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)
Preferred Stock [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Balance (in shares) at Dec. 31, 2020 100 3,834,095      
Balance at Dec. 31, 2020 $ 76,095 $ 3,834 $ 55,294,504 $ (45,805,581) $ 9,568,852
Common stock issued (in shares) 0 835,900      
Issuance of common stock upon warrant exercise $ 0 $ 836 3,173,320 0 3,174,156
Stock option expense     56,190   56,190
Net loss $ 0 $ 0 0 (1,562,778) (1,562,778)
Sale of common stock for cash (in shares) 0 1,644,000      
Sale of common stock for cash $ 0 $ 1,644 9,407,276 0 9,408,920
Issuance of common stock for services (in shares) 0 1,472      
Issuance of common stock for services $ 0 $ 1 5,999 0 6,000
Balance (in shares) at Mar. 31, 2021 100 6,315,467      
Balance at Mar. 31, 2021 $ 76,095 $ 6,315 67,937,289 (47,368,359) 20,651,340
Balance (in shares) at Dec. 31, 2021 0 6,381,541      
Balance at Dec. 31, 2021 $ 0 $ 6,382 68,731,220 (64,375,898) 4,361,704
Sale of common stock and warrants for cash (in shares) 0 707,484      
Sale of common stock and warrants for cash $ 0 $ 707 9,228,541 0 $ 9,229,248
Common stock issued (in shares) 0 2,360,000     145,866
Issuance of common stock upon warrant exercise $ 0 $ 2,360 (2,336) 0 $ 24
Stock option expense 0 0 190,191 0 190,191
Net loss $ 0 $ 0 0 (2,427,515) (2,427,515)
Balance (in shares) at Mar. 31, 2022 0 9,449,025      
Balance at Mar. 31, 2022 $ 0 $ 9,449 $ 78,147,616 $ (66,803,413) $ 11,353,652