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Intangible Assets, Net
3 Months Ended
Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets, Net
6. Intangible Assets, Net

 

Intangible assets, net consisted of the following at March 31, 2020 and December 31, 2019: 

  

   March 31, 2020   December 31, 2019 
   (unaudited)         
   Gross
Carrying
Amount
   Accumulated
Amortization
   Net
Carrying
Amount
   Gross
Carrying
Amount
   Accumulated
Amortization
   Net
Carrying
Amount
 
Patents  $50,000   $(26,875)  $23,125   $50,000   $(26,250)  $23,750 
Trade names, trademarks product names, URLs   555,000    (460,354)   94,646    555,000    (446,479)   108,521 
Internally developed software   1,990,000    (1,967,572)   22,428    1,990,000    (1,959,655)   30,345 
Subscriber/customer relationships   2,279,000    (1,855,392)   423,608    2,279,000    (1,813,725)   465,275 
Total intangible assets  $4,874,000   $(4,310,193)  $563,807   $4,874,000   $(4,246,109)  $627,891 

 

Amortization expense for the three months ended March 31, 2020 was $64,084, as compared to $64,082 for the three months ended March 31, 2019. The estimated aggregate amortization expense for each of the next five years and thereafter will be $182,597 in 2020, $184,667 in 2021, $149,944 in 2022, $18,000 in 2023, $17,354 in 2024 and $11,245 thereafter.