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CONSOLIDATED STATEMENTS OF CASH FLOWS 2 - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Cash from operating activities: |  |
Net loss | $ (6,008,901) | $ (6,747,435)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Bad debt expense (recovery) | 76,046 | (3,217)
Depreciation and amortization | 275,346 | 222,514
Loss on disposal of assets | 14,454 |
Stock based compensation | 262,411 | 351,970
Modification of employee stock options |  | 102,800
Stock issued for services | 144,167 |
PPP loan forgiveness including accrued interest | (1,421,577) |
Interest expense related to debt discounts |  | 94,627
Amortization of operating lease right of use asset | 250,482 | 234,001
Changes in assets and liabilities: |  |
Accounts receivable | (611,023) | 1,369,949
Contract assets | 99,009 | 1,273,462
Inventory | (185,915) | 112,423
Prepaid expenses and other current assets | 423,905 | 379,175
Security deposit | (600,000) |
Accounts payable | 445,184 | (2,042,118)
Accounts payable-related party | (7,700) | (5,091)
Payroll taxes payable | (3,146) | (111,965)
Accrued expenses | (408,692) | 697,320
Operating lease obligation | (127,816) | (239,688)
Contract liabilities | 523,085 | 700,892
Deferred revenue | 281,303 | (621,058)
Net cash used in operating activities | (6,579,378) | (4,231,439)
Cash flows from investing activities: |  |
Purchase of patents/trademarks | (7,435) | (8,185)
Purchase of fixed assets | (545,505) | (279,146)
Net cash used in investing activities | (552,940) | (287,331)
Cash flows from financing activities: |  |
Repayments of line of credit |  | (27,615)
Repayments of insurance and equipment financing | (353,444) | (260,983)
Repayment of finance lease | (89,618) | (62,931)
Repayment of notes payable |  | (1,000,000)
Proceeds from PPP loan |  | 1,410,270
Proceeds from equipment financing |  | 121,637
Proceeds from common stock issued |  | 9,253,128
Issuance cost |  | (1,001,885)
Proceeds from preferred stock issued | 4,500,000 |
Net cash provided by financing activities | 4,056,938 | 8,431,621
Net (decrease) increase in cash | (3,075,380) | 3,912,851
Cash, beginning of period | 3,969,100 | 56,249
Cash, end of period | 893,720 | 3,969,100
Supplemental Disclosure of Cash Flow Information: |  |
Interest paid | 30,817 | 33,698
Supplemental Non-Cash Investing and Financing Activities: |  |
Common stock issued for accrued BOD fees |  | 52,500
Lease right of use asset and liability | 4,980,104 |
Notes issued for financing of insurance premiums | $ 363,005 | $ 261,626

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