This Day, That Year – February 28

Edward Acheson patented an abrasive he named “carborundum” on this day in 1893.

Did you know that:

• The erroneous word “Dord” was discovered in the Webster’s New International Dictionary, Second Edition, on this day in 1939
• American engineer Wright Forrester issued a patent for a computer core memory on this day in 1956
• Donald M. Mauldin was granted a patent for a knee and elbow brace on this day in 1984