• Filing Date: 2019-07-11
  • Form Type: 10-K
  • Description: Annual report
v3.19.2
Intangibles and Other Assets (Narrative) (Details) - USD ($)
12 Months Ended
Apr. 30, 2019
Apr. 30, 2018
Amortization of Intangible Assets $ 5,821 $ 3,500
Amortization Period for Patents 11 years 10 months 24 days 13 years 2 months 12 days