[…] were solved, and rubber gained durability. Erasers were attached to the ends of pencils after Hymen Lipman patented the idea, and the hu...

Comment on 10 Obscure Inventors And Their Wonderful Inventions by Top 10 Intriguing Origins Of School Supplies – Khu Phim

[…] were solved, and rubber gained durability. Erasers were attached to the ends of pencils after Hymen Lipman patented the idea, and the humble eraser took on a bit of personality when novelty versions were […]



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