X
This is a picture of marbles being manufactured in - This is a picture of marbles being manufactured in early 20th century. In 1900 Martin Frederick Christensen patented a machine that revolutionized the manufacture of steel ball bearings
@suryachalla (1369)
• India

This is a picture of marbles being manufactured in - This is a picture of marbles being manufactured in early 20th century. In 1900 Martin Frederick Christensen patented a machine that revolutionized the manufacture of steel ball bearings