Yahoo Αναζήτηση Διαδυκτίου

Αποτελέσματα Αναζήτησης

  1. Uncover the intriguing history and versatile uses of pencil erasers in this brief, enlightening episode. From their modest origins to becoming essential tool...

  2. 30 Μαρ 2014 · On March 30, 1858, Philadelphia inventor Hymen Lipman patented the first pencil with its own, built-in eraser.

  3. This new HISTORY Channel docuseries reveals the surprising stories and rivalries behind the ground-breaking innovations that turned America into a superpower.

  4. 14 Μαρ 2019 · Learn about the history of pencils, erasers, sharpeners, markers, highlighters, and gel pens. See who invented and patented these writing instruments.

  5. Almanac: The pencil and eraser. On March 30, 1858, Philadelphia inventor Hymen Lipman patented the first pencil with its own, built-in eraser.

  6. The Introduction of Rubber Erasers. The eraser revolution began in 1770 when British engineer Edward Nairne invented the ‘rubber’. Up until then, rubber was only used to erase pencil lines from paper. Nairne conceived of a rubber attached to a pencil for easy erasing as you write.

  7. en.wikipedia.org › wiki › Hymen_LipmanHymen Lipman - Wikipedia

    Hymen L. Lipman (c. 1817/1823 – November 4, 1893) is credited with registering the first patent for a pencil with an attached eraser on March 30, 1858 (U.S. patent 19,783).

  1. Γίνεται επίσης αναζήτηση για