Annual report pursuant to Section 13 and 15(d)

A. BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)

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A. BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) - USD ($)
2 Months Ended 12 Months Ended
Feb. 16, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Accumulated deficit   $ (128,255,391) $ (125,105,539)  
Accounts payable   1,043,007 1,265,560  
Accrued royalties – long-term   500,000 0  
Net Cash Used In Operating Activities   (844,794) (1,875,846)  
Proceeds from loan   913,063 0  
Credit line amount outstanding   267,289 624,347  
PPP loan balance   913,063 0  
Allowance for doubtful accounts   7,973 55,039 $ 65,542
Inventory obsolescence   $ 404,000 241,000  
Property and equipment useful lives   2 to 10 years    
Impairment on long-lived assets   $ 0 $ 0  
Shares excluded from EPS calculation (antidilutive shares)   3,599,793 3,599,793  
Guarantees and product warranty return percentage   1% to 3% 1% to 3%  
Advertising expense   $ 10,104 $ 54,945  
Research and development expenses   1,177,282 1,737,385  
Stock based compensation expenses   7,262 7,262  
Warranty liabilities   45,328 $ 58,791 $ 46,103
PPP Loan [Member]        
Proceeds from loan   913,063    
PPP loan balance   913,063    
PPP Loan [Member] | Subsequent Event [Member]        
Debt forgiven $ 913,063      
Credit Facility [Member]        
Credit line maximum borrowing capacity   2,000,000    
Credit line amount outstanding   267,289    
License Agreement [Member]        
Accounts payable   28,000    
Accrued royalties – long-term   $ 500,000