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7. INTANGIBLE ASSETS
 12 Months Ended
Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
7. INTANGIBLE ASSETS

7.    INTANGIBLE ASSETS

 

The Company amortizes intangible assets with finite lives over their estimated useful lives, which range between two and twenty years as follows:

 

  Useful life
Patents   15-20 years
Websites   3 years
Customer list and non-compete agreement   3-4 years
Design assets   2 years
Trademarks   14 years
Engineering trade secrets   7 years
Software   2–3 years

 

Intangible assets consist of the following as of September 30, 2020 and September 30, 2019:

 

   September 30, 2020  September 30, 2019
Patents  $74,112   $74,112
Websites   8,115    16,482
Customer list and non-compete agreement   6,702,024    5,722,024
Design assets   123,000    —  
Trademarks   5,928    5,928
Engineering trade secrets   4,370,269    4,370,269
Software   1,120,000    —  
Intangible assets:   12,403,448    10,188,815
Less: accumulated amortization   (5,353,792)   (2,758,733)
Intangible assets, net  $7,049,656   $7,430,082

 

Amortization expense for the years ended September 30, 2020 and 2019 was $2,603,427 and $1,858,559, respectively.

 

The Company expects to record amortization expense of intangible assets over the next 5 years and thereafter as follows:

        
 2021   $ 2,909,648 
 2022    2,526,034 
 2023    1,010,126 
 2024    567,260 
 2025    4,294 
 Thereafter    32,294 
 Total  $ 7,049,656