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v3.20.1

Consolidated Statements of Cash Flows - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Cash flows from operating activities: |  |
Net loss | $ (7,580,240) | $ (7,691,771)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation expense | 47,495 | 66,604
Amortization of patents | 53,013 | 814,681
Impairment to long lived assets |  | 1,539,794
Stock compensation | 183,888 | 409,021
Loss from earnings on China joint venture | (81,324) | (329,700)
Inventory reserve |  | 543,545
Deferred cost reserve |  | 1,250,928
Change in fair value of derivative liability | 3,635,580 |
Amortization of right-of-use assets | 155,962 |
Changes in operating assets and liabilities: |  |
Decrease (Increase) in accounts receivable | 267,791 | (442,943)
Decrease (Increase) in accounts receivable, related party | 100,000 | (192,540)
(Increase) in other receivables | (9,027) |
Decrease in inventories | 300,542 | 914,613
(Increase) Decrease in advances on contracts | (61,879) | 48,409
(Increase) Decrease in prepaid expenses and other current assets | (104,522) | 21,869
Increase in accounts payable | 320,239 | 227,773
(Decrease) Increase in accounts payable, related party | (303,346) | 678,171
Decrease (Increase) in deferred cost, related party | 50,000 | (191,257)
Increase in accrued expenses | 273,537 | 620,797
Increase (Decrease) in accrued expenses, related party | 1,228,965 | (108,640)
Decrease in operating lease liability | (155,962) |
(Decrease) Increase in deferred revenue, related party | (100,000) | 192,540
Net cash used in operating activities | (1,779,288) | (1,628,106)
Cash flows from investing activities: |  |
Purchase of intangible assets |  |
Purchase of property and equipment | (9,916) | (7,401)
Acquisition of Milestone Education |  | (8,020)
Net cash used in investing activities | (9,916) | (15,421)
Cash flows from financing activities: |  |
Payments for financing transaction |  | (250,000)
Proceeds from exercise of warrants | 337,500 |
Net proceeds from Public Placement Offering | 1,974,547 |
Net proceeds from Private Placement Offering | 250,000 |
Net cash provided by financing activities | 2,562,047 | (250,000)
Net increase (decrease) in cash and cash equivalents | 772,843 | (1,893,527)
Cash and cash equivalents at beginning of period | 743,429 | 2,636,956
Cash and cash equivalents at end of period | 1,516,272 | 743,429
Supplemental non-cash disclosure of cash flow information: |  |
Shares issued to employee for bonuses | 753,000 |
Shares issued to board of directors for services rendered | 67,000 |
Shares issued to employees for compensation | 37,500 | 45,000
Shares issued to consultants in lieu of cash payments | 440,400 | 289,750
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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