Sleigh Bells
Sleigh Bells were attached to harnesses of horse-drawn vehicles. They very helpful and useful because they would alert other riders
Two-Person Saw
Two-person saws cut in both directions, the word two-person saw meaning two people will hold each side of the saw
Typewriter
Typewriters were used in the olden times to communicate with people around the world. They were also used mostly for
Princeton University’s Hovercraft Prototype
During the late 1950s, a worldwide burst of energy poured forth in experimental Ground Effect Machines (GEMs) and Surface Effects Ships (SES).
