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SEGMENT AND GEOGRAPHIC INFORMATION (Tables)
12 Months Ended
Dec. 31, 2020
Segment Reporting [Abstract]  
Segment reporting information
   

Year Ended

December 31,

2020

   

Year Ended

December 31,

2019

 
United States   $ 3,417,000     $ 3,189,000  
North America (not domestic)     4,000       11,000  
Europe     55,000       108,000  
Asia/Pacific Rim     17,000       13,000  
South America     616,000       344,000  
Africa     38,000       0  
    $ 4,147,000     $ 3,655,000