Scope and content: While the later half of the 19th century saw a series of patents for barbed wire, it was this one that has proven to be the most enduring. In 1874 Joseph Glidden, an Illinois farmer, patente More
Scope and content: Wilbur and Orville Wright patented the design for several unpowered gliders before making their first successful flight in a powered aircraft later in 1903. This patent oath is for one of th More