Hungarian journalist Laszlo Biro was well aware of the problems with normal pens. To avoid clogging his pen up with thick ink, he proposed a tiny metal ball that rotated at the end of a tube of this quick drying ink.
By: ashok kumar!
- Created By
- School
- Address
- Class
- Sunil kumar.S, Nithin kumar.P.V, Musamil.F.K
- Govt Boys H.S.S
- Karmana,Thiruvanthapuram, Kerala
- 10th