Telephone & Electricity
shampoo
The telephone
the lightbulb
ipod touch is one of the most used inventions i would say.
Millions of people use the invention of a skateboard. Skateboards are used by many ages of people but are most often used by children.
The most invention most used in the 1920's was the radio because it was invented in 1921 and became very popular but became less popular with the stock marke crashed and Great Depression started
most invention comes from USA
If some sort of agreement was signed at all to build the invention, the most likely yes. If school materials were used to build the invention, yes. Applying for a patent is a way to protect the invention.
His most popular invention is most likely the First flying Maschine
I think that the car would be the most best invention!
laptop portability is the most important invention
the most treausred invention is the light bulb