James Sargent
the egyptians
g Washington
About 4,000 years ago wooden locks and keys were invented.
Kelly Jones
The childproof conatiners were invented by Dr. Henri Brealt (1909-1983)
Yes, locks and keys were invented in ancient times, and they were still produced and used in the middle ages.
The back hand spring was usually invented in the 1960's if u ask me
the spring as first used in the late 1400's.
The spring balance was invented by Richard Salter, a British balance maker, in the late 18th century. His invention revolutionized the way weight measurements were taken by utilizing the elasticity of a spring to measure force.
Locks were first invented around 4000 years ago in ancient Egypt. The earliest known locks were made of wood and consisted of a wooden bolt that slid into a slot to secure a door or gate. Over time, locks have evolved and become more sophisticated, with various types and mechanisms developed to enhance security.
Spring wasn't invented, it's just there. They have a different name for it in every country. You're talking about the season, right?