Concept, Design and Patent Crated By Sanchayan Ghosh
Sweeping Machine Patent Application No: 202021004902 https://www.youtube.com/watch?v=1LMa0JfTEOg
iLock (Application No:202021016793) https://www.youtube.com/watch?v=8aK4oNo_Q4o
Electro Mechanical Stethoscope (Patent Application Number:202021004068)
https://www.youtube.com/watch?v=YAZ5oqKO1oI