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v3.19.3

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) | 9 Months Ended
--- | ---
Sep. 30, 2019 | Sep. 30, 2018
Cash flows from operating activities: |  |
Net loss | $ (4,696,358) | $ (7,729,937)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation expense | 37,159 | 53,675
Amortization of patents | 39,760 | 801,426
Impairment to long lived assets |  | 1,539,794
Stock compensation | 146,847 | 247,425
Income from earnings on China joint venture | (49,100) | (258,616)
Inventory reserve |  | 728,017
Deferred cost reserve |  | 790,189
Change in fair value of derivative liability | 1,846,761 |
Amortization of right-of-use assets | 117,121 |
Changes in operating assets and liabilities: |  |
Decrease in accounts receivable | 739,195 | 521,347
Decrease in accounts receivable, related party | 100,000 | 466,455
Increase in other receivables | (9,027) |
Decrease in inventories | 303,989 | 405,234
Decrease (increase) in advances on contracts | 20,289 | (187,631)
Increase in prepaid expenses and other current assets | (90,362) | (9,854)
(Decrease) increase in accounts payable | (465,670) | 328,900
(Decrease) increase in accounts payable, related party | (109,989) | 467,352
Increase (decrease) in deferred cost, related party | 50,000 | (470,708)
Increase in accrued expenses | (50,424) | 859,677
Increase in accrued expenses, related party | 1,011,245 | (43,892)
Decrease in operating lease-right of use asset | (117,122) |
(Decrease) increase in deferred revenue, related party | (100,000) | (466,455)
Net cash used in operating activities | (1,275,686) | (1,957,602)
Cash flows from investing activities: |  |
Purchase of property and equipment | (9,916) | (6,505)
Acquisition of Milestone Education |  | (8,020)
Net cash used in investing activities | (9,916) | (14,525)
Cash flows from financing activities: |  |
Payments for financing transaction |  | (250,000)
Proceeds from exercise of warrants | 28,875 |
Net proceeds from Public Placement Offering | 1,974,547 |
Net proceeds from Private Placement Offering | 250,000 |
Net cash provided by financing activities | 2,253,422 | (250,000)
Net increase (decrease) in cash and cash equivalents | 967,820 | (2,222,127)
Cash and cash equivalents at beginning of period | 743,429 | 2,636,956
Cash and cash equivalents at end of period | 1,711,249 | 414,829
Supplemental non-cash disclosure of cash flow information: |  |
Shares issued to employee for bonuses | 211,500 | 47,401
Shares issued to board of directors for services rendered | 67,000 |
Shares issued to employees for compensation | 37,500 |
Shares issued to consultants in lieu of cash payments | 416,500 | 350,103
Sale of Milestone China share, financing transaction |  | (1,400,000)
Credit from United Systems for defective handpieces | (151,562) |
Initial recognition of operating lease-right of use assets | (166,292) |
Initial recognition of operating lease right to used liabilities | $ 166,292 |

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