• Filing Date: 2019-07-11
  • Form Type: 10-K
  • Description: Annual report
v3.19.2
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Details) - USD ($)
Apr. 30, 2019
Apr. 30, 2018
Total $ 224,795 $ 221,062
Patents [Member]    
2020 4,248  
2021 4,248  
2022 4,248  
2023 4,248  
2024 4,248  
Thereafter 22,788  
Total $ 44,028 $ 49,849