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BALANCE SHEETS - USD ($)
Dec. 31, 2022
Dec. 31, 2021
Current Assets:    
Cash and cash equivalents $ 11,483,018 $ 5,961,760
Trade receivables, net of allowance of $26,000 and $26,000, respectively 1,769 49,250
Inventories 615,283 592,172
Prepaid and other current assets 344,110 247,736
Total current assets 12,444,180 6,850,918
Property, Plant and Equipment: 22,590,169 22,425,935
Accumulated depreciation (22,038,508) (22,146,273)
Net property, plant and equipment 551,661 279,662
Other Assets:    
Operating lease right-of-use assets, net 4,324,514 4,984,688
Patents, net of accumulated amortization of $154,218 and $135,050, respectively 79,983 86,595
Equity method investment 61,379 21,205
Other non-current assets 1,214,985 625,000
Total other assets 5,680,861 5,717,488
Total Assets 18,676,702 12,848,068
Current Liabilities:    
Accounts payable 595,157 642,165
Related party payables 67,164 45,000
Accrued expenses 888,869 657,216
Accrued payroll 490,185 230,698
Severance payable 437,079  
Accrued professional services fees 952,573 103,620
Accrued interest 559,060 475,671
Current portion of operating lease liability 733,572 646,742
Other payable 250,000 250,000
Total current liabilities 4,973,659 3,051,112
Long-Term Liabilities:    
Non-current operating lease liabilities 3,827,878 4,532,490
Non-current convertible notes, net 5,268,399 8,076,847
Accrued warranty liability 21,225 21,225
Total liabilities 14,091,161 15,681,674
Commitments and contingencies (Note 18)
Stockholders’ Deficit:    
Series A preferred stock, $.0001 par value; 750,000 shares authorized; 48,100 and 48,100 shares issued and outstanding, respectively ($850,301 and $801,533 Liquidation Preference, respectively) 5 5
Common stock, $0.0001 par value, 500,000,000 authorized; 34,000,812 and 4,786,804 shares issued and outstanding, respectively 3,400 479
Additional paid in capital 452,135,653 424,948,698
Accumulated deficit (447,537,493) (427,782,788)
Accumulated other comprehensive loss (16,024)  
Total stockholders' equity (deficit) 4,585,541 (2,833,606)
Total Liabilities and Stockholders' Equity (Deficit) $ 18,676,702 $ 12,848,068