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Statements of Cash Flows (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
Cash flows from operating activities: |  |
Net loss | $ (870,306) | $ (1,482,100)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation expense | 18,816 | 22,094
Amortization of patents | 76,317 | 83,297
Amortization of debt discount | 3,065 | 5,296
Common stock and options issued for compensation, consulting, and vendor services | 673,691 | 864,555
Bad debt reversal | (207,650) | (86,120)
Loss on sale/disposal of equipment | 1,604 |
Loss on Earnings from Joint Venture | 171,016 | 121,399
Write-off of Investment in Germany | 76,319 |
Changes in operating assets and liabilities: |  |
Decrease (Increase) in accounts receivable | 525,182 | (172,214)
Decrease in inventories | 151,933 | 196,453
Decrease (Increase) to advances on contracts | 579,060 | (962,221)
Decrease to prepaid expenses and other current assets | 65,119 | 17,717
Decrease in other assets | 20,502 | 47,432
(Decrease) Increase in accounts payable | (1,594,937) | 607,568
Increase in accrued expenses | 173,535 | 111,392
Increase in accrued interest for notes payable | 87,016 | 54,722
Net cash used in operating activities | (49,718) | (570,730)
Cash flows from investing activities: |  |
Purchases of property and equipment | (4,735) | (7,467)
Payments for patent rights | (26,622) | (31,561)
Net cash used in investing activities | (31,357) | (39,028)
Cash flows from financing activities: |  |
Proceeds from the sale of stock options rights |  | 24,000
Proceeds from the exercise of stock options |  | 25,000
Proceeds from the sale of common stock | 150,000 | 30,000
Net cash provided by financing activities | 150,000 | 79,000
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | 68,925 | (530,758)
Cash and cash equivalents at beginning of year | 96,324 | 627,082
Cash and cash equivalents at end of year | 165,249 | 96,324
Supplemental disclosure of cash flow information: |  |
Interest expense paid in cash |  | 23,000
Supplemental disclosure of non cash activities: |  |
Shares issued to directors for compensation | 45,000 | 45,000
Shares issued to employees in lieu of cash compensation | 43,125 | 30,000
Shares issued to settle accounts payable | 217,415 | 191,214
Non-Cash Transfer of assets to JV |  | $ 194,765

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