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6. PATENTS (Tables) | 12 Months Ended
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Dec. 31, 2014
Patents Tables |
Patents |
|  | 2014 Cost |  | Accumulated Amortization |  | 2014 Net |
Patents |  | $ 228,597 |  | $ 91,193 |  | $ 137,404 |
|  | 2013 Cost |  | Accumulated Amortization |  | 2013 Net |
Patents |  | $ 249,284 |  | $ 80,416 |  | $ 168,868 |
Estimated depreciation expense |
2015 | $ 17,466
2016 | 17,466
2017 | 17,466
2018 | 17,466
2019 | 17,466

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