Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Tables)

v3.19.1
Summary of Significant Accounting Policies (Tables)
3 Months Ended
Mar. 31, 2019
Accounting Policies [Abstract]
Schedule of warranty liability
For the Three Months Ended March 31,
2019 2018
Balance at beginning of period $ 24,190 $ 21,935
Increase in estimated warranty liability 1.631 1,483
Warranty expenses incurred (50 ) -
Balance at end of period $ 25,771 $ 23,418
Schedule of diluted common shares outstanding
March 31,
2019
March 31,
2018
Convertible notes 1,600,000 966,404
Stock options 11,445,698 14,794,213
Warrants 1,000,000 293,123
Non-vested, forfeitable common shares 6,198,672 -