Bluebot Studios

On this day in 1919….Patent USD53898S was granted.
Patent Name: Tractor
Inventor: Henry Ford
https://patents.google.com/patent/USD53898S/en

On this day in 1891….Patent US460097A was granted.
Patent Name: Compass Watch
Inventor: T.F. Burgdorff
https://patents.google.com/patent/US460097

“With some canvas, leather, shellac and black paint, inventor Edward Bullard, helped America usher in a new era of workplace safety.” In 1929, when the hardhat was patented, it was often an option for protection. Today, hardhats are a standard in safety equipment.

The History of the Hard Hat With some canvas, leather, shelac and black paint, inventor Edward Bullard helped America usher in a new era of workplace safety

On this day in 1937….Patent US2091359A was granted.
Patent Name: Traffic Signal
Inventors: Gort Godfrey and Walter Dinnerville
https://patents.google.com/patent/US2091359A/en