invention articles - Page: 15
What was the first machine used to record audio?
Who made the first record sound device?
What inventions do we need in the world?
Who is the real inventor of cameras?
What was the first projector called?
What was the ballpoint pen invented to replace?
What is chindogu?
Who invented the electric power system?
Who invented the emergency light?
Who invented street lights in the USA?
Who invented navigation software?
Who invented the pressure gauge?
What did Ashok Gadgil invent?
What technology did Mercedes invent?
What was the first Lambretta scooter?
What did Kirkpatrick Macmillan invent?
Who invented the first air purifier?
What else did Eli Whitney invent?
Who invented the textile industry?
What were the major inventions in the textile industry?
Who invented the first landfill?
Did Japan invent vending machines?
What is a click pen?
