Quarterly report pursuant to Section 13 or 15(d)

11. Stockholders' Equity (Details - Options by exercise price (Details - Options Outstanding and Exercisable)

v3.21.1
11. Stockholders' Equity (Details - Options by exercise price (Details - Options Outstanding and Exercisable) - Options [Member] - $ / shares
Mar. 31, 2021
Dec. 31, 2020
Options Outstanding 315,000 210,000
Options Exercisable 315,000  
Options outstanding, exercise price $ 4.80 $ 9.61
$5.70 per share [Member]    
Options Outstanding 30,000  
Options Exercisable 30,000  
$5.70 per share [Member]    
Options Outstanding 30,000  
Options Exercisable 30,000  
Options outstanding, exercise price $ 5.70  
$5.70 Per Share [Member]    
Options Outstanding 30,000  
Options Exercisable 30,000  
Options outstanding, exercise price $ 5.70  
$5.70 Per Share [Member]    
Options Outstanding 30,000  
Options Exercisable 30,000  
Options outstanding, exercise price $ 5.70  
$5.70 Per Share [Member]    
Options Outstanding 30,000  
Options Exercisable 30,000  
Options outstanding, exercise price $ 5.70  
$5.70 Per Share [Member]    
Options Outstanding 30,000  
Options Exercisable 30,000  
Options outstanding, exercise price $ 5.70  
$5.70 Per Share [Member]    
Options Outstanding 30,000  
Options Exercisable 30,000  
Options outstanding, exercise price $ 5.70  
$3.00 Per Share [Member]    
Options Outstanding 15,000  
Options Exercisable 15,000  
Options outstanding, exercise price $ 3.00  
$3.00 Per Share [Member]    
Options Outstanding 15,000  
Options Exercisable 15,000  
Options outstanding, exercise price $ 3.00  
$3.00 Per Share [Member]    
Options Outstanding 15,000  
Options Exercisable 15,000  
Options outstanding, exercise price $ 3.00  
$3.00 Per Share [Member]    
Options Outstanding 15,000  
Options Exercisable 15,000  
Options outstanding, exercise price $ 3.00  
$3.00 Per Share [Member]    
Options Outstanding 15,000  
Options Exercisable 15,000  
Options outstanding, exercise price $ 3.00  
$3.00 Per Share [Member]    
Options Outstanding 15,000  
Options Exercisable 15,000  
Options outstanding, exercise price $ 3.00  
$3.00 Per Share [Member]    
Options Outstanding 15,000  
Options Exercisable 15,000  
Options outstanding, exercise price $ 3.00