Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Tables)

v3.21.1
Summary of Significant Accounting Policies (Tables)
 3 Months Ended
Mar. 31, 2021
Accounting Policies [Abstract]
Schedule of warranty liability
For the Three Months Ended
March 31,
2021 2020
Balance at beginning of period $ 26,833 $ 26,933
Change in estimated warranty liability - -
Warranty expenses incurred (100 ) (100 )
Balance at end of period $ 26,733 $ 26,833
Schedule of diluted common shares outstanding
March 31,
2021 2020
Convertible notes - 20,322,917
Stock options 8,445,698 8,445,698
Warrants 1,000,000 2,194,375
Series B preferred stock 114,598,413 8,111,111
Series C preferred stock 250,793,651 3,600,000
Non-vested, forfeitable common shares 21,028,553 17,475,299
395,866,315 60,149,400