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Condensed Statements of Cash Flows (Unaudited) - USD ($)
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Operating Activities:    
Net Loss $ (2,876,501) $ (2,543,868)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 30,434 30,018
Common stock issued for services 257,825 217,500
Compensation expense related to grant of stock options 81,204 12,092
Amortization of debt discount 5,990 524,925
Amortization of operating lease right of use asset (29,554) (21,290)
(Increase) decrease in:    
Accounts receivable (545,619) 220,875
Prepaid expenses and other current assets (239,863) (490,264)
Inventory 143,224 (3,670)
Deposits 4,869 48,672
Increase (decrease) in:    
Accounts payable (114,228) (654,814)
Accrued expenses 177,640 (203,978)
Convertible note payable issued in lieu of salary - related party (220,417) 35,417
Sales tax payable 74,703 133,211
Deferred revenue 18,968 (749,108)
Net cash used in operating activities (3,231,325) (3,444,282)
Investing Activities:    
Purchase of equipment (153,097) (9,977)
Funding of patent costs (69,551) (41,554)
Net cash used in investing activities (222,648) (51,531)
Financing Activities:    
Borrowings (repayments) on convertible line of credit, net 0 (960,000)
Repayments of convertible notes payable, net 0 (1,650,616)
Borrowings (repayments) of note payable 339,262 (862,500)
Repayments of auto loan (8,275) (7,843)
Proceeds from warrant exercises 1,066,912 0
Payments of deferred equity offering costs (960,833) (1,175,852)
Fractional share payments 0 (171)
Proceeds from issuance of common stock and warrants, pursuant to public offering 11,499,675 13,201,000
Net cash provided by financing activities 11,936,741 8,544,018
Net increase in cash 8,482,768 5,048,205
Cash at beginning of period 3,849,456 244,024
Cash at end of period 12,332,224 5,292,229
Supplemental Disclosure of Cash Flow Information:    
Cash paid for interest 54,156 363,899
Cash paid for taxes 4,969 3,100
Supplemental Disclosure of Non-Cash Investing and Financing Activities:    
Recording of debt discount 0 3,967
Transfer of prepaid asset to inventory 126,100 541,307
Recording of right of use asset and corresponding liability 2,605,032 872,897
Depreciation capitalized into inventory 15,010 19,976
Reclassification of deferred equity offering costs to APIC 960,833 1,370,879
Transfer of fixed asset to inventory $ 76,946 $ 0