Was today the anniversary of a famous patent?
YES
Yes — Joseph Glidden filed his barbed wire patent on October 27, 1873, 153 years ago today.
Why
- Glidden's twisted-barbs design fenced in the American West
- Philip B. Downing patented an improved street mailbox on this date in 1891
- Gleb Kotelnikov patented the backpack parachute on October 27, 1911