Henry David Thoreau and his father invented the graphite, which creates very readable text; This became standard in ...
IEEE Spectrum on MSN1d
Before the Undo Command, There Was the Electric EraserAn electric eraser could also be a timesaver. In the days before computer-aided drawing and the ease of the delete and undo ...
Twist-Erase III Mechanical Pencils feature a sturdy ... grip delivers maximum comfort and control With the jumbo Twist-Up Eraser, you'll suffer no smudges, no paper tears and no ghosts Each ...
Pencils, erasers, ballpoint pens - it was always fun ... patented by Cooper & Eckstein in England in 1833. It was simply two blades set at right angles to each other in a small block of rosewood.
The two companies have few competing products between them. Mitsubishi Pencil, known for its uni brand ballpoint pens, pencils and erasers, offers products mostly priced under 1,000 yen ($6.63).
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