6. PATENTS (Tables)

3 Months Ended

Mar. 31, 2014

Patents Tables

Patents

	March 31, 2014 Cost		Accumulated Amortization		March 31, 2014 Net
Patents	$	239,867	$	81,953	$	157,914

	December 31, 2013 Cost		Accumulated Amortization		December 31, 2013 Net
Patents	$	249,284	$	80,416	$	168,868

Estimated depreciation expense

Estimated depreciation expense over the next five years is as follows:

2014	$	18,330
2015		18,330
2016		18,330
2017		18,330
2018		18,330