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5. PATENTS | 12 Months Ended
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Sep. 30, 2012
Accounting Policies [Abstract] |
5. PATENTS | During the years ended September 30, 2012, 2011 and 2010, the Company recorded patent impairment charges of $44,921, $9,016, and $13,877, respectively, for the net book value of patents abandoned during the year. These amounts are included in general and administrative expenses. Amortization expense for the years ended September 30, 2012, 2011 and 2010 totaled $86,297, $84,142, and $78,488, respectively. The total estimated future amortization is as follows:
Year ending September 30,
2013 | $ 74,257
2014 | 32,959
2015 | 32,959
2016 | 32,959
2017 | 32,960
Thereafter | 178,184
| $ 384,278

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