Also, the Patent no specified is a patent issued by NIPO National intellectual property office of SL and not.by the WIPO I.e it's not valid outside of Sri Lanka. I'm sure WIPO guys know enough to not issue a certificate to a device invented in 1930s (varistor) and 1970s (MOVs)
Baya wenna wenawa.... Mokada okata hariyata henayak wedunoth nam oka alu wena eka nam sure ...... Oke karanna පුළුවන් අකුණුවලින් ඇතිවෙන surge earth karanna විතරයි ....... Oya මහත්මයා ac and dc kathawak othana කියවනවා Wedagathma karanawa wena surge ekak gena kiyala denne ne..... Gewal ethulata akunak awoth ithin oya kisima deyakata karanna deyak ne Oya solution ekak dila thiyenne akunu weladi niwasata current ena rehen wela preranaya wena ක්ෂණික high voltage eka gena Ekata kiyanne spike ekak kiyala Eka nam earth karanna puluwan Ape gedara th ohoma ගැටලුවක් thibuna Fan bulb and other device godak hani una Mama th thaniyama device ekak හදාගත්ත ... Eke short circuit indicators Earth indicator And breathing light Okkoma included ..... Awashya nam oita wada adu mudalakata hadala denna පුළුවන් .....