This Day, That Year – November 23

J. L. Love patented a pencil sharpener on this day in 1897.

Did you know that:

• Ducos du Hauron was granted a patent for the process of making colour photographs on this day in 1863
• Andrew Beard was granted a patent for automatic car couplers on this day in 1897
• Colin Turnbull was a British-American anthropologist born on this day in 1924