An idea to develop the soft pen design
(2011)
Patent
Al-ossmi, L. H. (2011). An idea to develop the soft pen design
The idea is a simple and cheap design in which the soft pen can be used to draw and write at 60 degree slop surface at the blackboard, also the idea is very useful in schools and university to help student write on different slops and surfaces. Th... Read More about An idea to develop the soft pen design.