See the original patent for the telephone issued to Alexander Graham Bell.
Have you ever wondered how a telephone works, it is an invention that most of us use everyday, yet few of us know how a telephone works.
Valentine inventions - heart shaped patents for romance.
Benjamin Franklin invented the lightning rod - iron furnace stove - bifocal glasses and odometer - sp Ben Franklin.
Wacky patents for Thanksgiving themed inventions.
Famous logos trademarked with a Thanksgiving Day flair.
The history of dirigibles - airships - zeppelins - blimps and balloon flight.
Photos illustrations and drawings of inventions belonging to Nikola Tesla
Inventions connected to shamrocks and St Patrick's Day publicity stunts
Picture of Emile Berliner gramophone
Rusi Taleyarkhan and team invented variable velocity bullets - view stungun.
Nanotechnology is changing every industrial sector - view nanotechnology inventions.
The depth charge is a weapon used by ships or aircraft to attack submerged submarines - developed by the British for use against German submarines.
Learn how a battery works and what the different types of batteries are.
How a photovoltic cell works
The history behind circus, theme park, and carnival inventions including roller coasters, carousels, ferris wheels, trampoline and more.
Photos of the inventions of Granville Woods.
A drawing of the invention made by Bessie Blount - Physical therapist Bessie Blount worked with injured soldiers and her war service inspired her to patent a device that allowed amputees to feed themselves.
Otis Boykin invented an improved electrical resistor used in computers radios television sets and a variety of electronic devices.
See amazing inventions patented in service of Halloween - bats and pumpkins.
See amazing inventions patented in service of Halloween - Halloween mask and ghoul mask.
The history of the humble paper punch aka hole punch and you wondered how would you punch holes in paper without one.
Lesson plan on how to build your own submarine simulation.
View a Slinky in motion - Richard and Betty James invented the slinky.
Plans to make a kaleidoscope from easy to find materials