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Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2019
Intangible Assets |
Summary of the components of intangible asset balances |
|  | As of December 31,
|  | 2019 |  | 2018
Patents — in use |  | $ | 304,270 |  | $ | 304,270
Patents — in process |  |  | 120,581 |  |  | 73,164
Internally developed software — in use |  |  | 867,569 |  |  | 867,569
Internally developed software — in process |  |  | 80,721 |  |  | 13,723
Trademarks |  |  | 26,133 |  |  | 23,017
|  |  | 1,399,274 |  |  | 1,281,743
Accumulated amortization |  |  | (539,187) |  |  | (449,224)
Total |  | $ | 860,087 |  | $ | 832,519
Schedule of expected annual amortization expense related to intangible assets (excludes in process intangible assets) |
2020 |  | $ | 89,963
2021 |  | $ | 89,963
2022 |  | $ | 89,392
2023 |  | $ | 88,740
2024 |  | $ | 88,439

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