Annual report pursuant to Section 13 and 15(d)

3. PATENTS (Tables)

v3.19.2
3. PATENTS (Tables)
12 Months Ended
Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of patents
    March 31, 2019     March 31, 2018  
Patents   $ 211,645     $ 211,645  
Accumulated amortization     (144,977 )     (135,813 )
    $ 66,668     $ 75,832