Method and device for advancing lead and eraser in mechanical pencils and pen and erasers in pens
A Standard patent application filed on 06 August 2003 credited to Wijerama, Roshan
Details
Application number :
2003268065
Application type :
Standard
Application status :
LAPSED
Under opposition :
No
Proceeding type :
Invention title :
Method and device for advancing lead and eraser in mechanical pencils and pen and erasers in pens