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Patents | 6 Months Ended
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Jun. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Patents | 7. Patents In fiscal 2005, the Company started the patent process for additional WATER$AVR® products. Patents associated with these costs were granted in 2006 and they have been amortized over their legal life of 17 years.
|  | June 30, 2019 Cost |  |  | Accumulated Amortization |  |  | June 30, 2019 Net |
Patents |  | $ | 202,565 |  |  | $ | 147,770 |  |  | $ | 54,795 |
|  | December 31, 2018 Cost |  |  | Accumulated Amortization |  |  | December 31, 2018 Net |
Patents |  | $ | 194,320 |  |  | $ | 131,306 |  |  | $ | 63,014 |
The increase in the carrying amount of patents is primarily due to foreign currency translation effects. The 2019 cost in Canadian dollars - $265,102 (2018 - $265,102 in Canadian dollars). Amount of amortization for 2019 - $8,219 (2018 - $8,219) and is included in cost of sales in the consolidated statements of income and comprehensive income. Estimated amortization expense over the next four years is as follows:
2019 |  | $ | 8,219 |
2020 |  |  | 16,438 |
2021 |  |  | 16,438 |
2022 |  |  | 13,700 |

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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