guidon (plural guidons) 1  A small pennant or banner carried by infantry soldiers to direct troop movement. 2  A soldier assigned to carry such a banner.
Within a year or two, Western Union and other telegraph companies were using diplex telegraphs on their busiest lines in major cities. In 1874, Thomas Edison invented the first quadruplex telegraph, which was capable of sending two messages simultaneously in each direction.ears later, quadruplex telegraphs were displaced by two new inventions, multiplex telegraphy capable of eight or more simultaneous transmissions, and the use of teletype machines, which did not require their operators to know Morse Code.
Thomas Edison was born in 1847 in Milan, Ohio. Like Ben Franklin, he was both a scientist and an inventor. In fact, Edison patented 1,093 inventions in his lifetime including the kinetoscope, the phonograph, and his most famous - the incandescent light bulb. The Menlo Laboratory in Newark, New Jersey, was to become the first research and development lab in the world. Edison called this lab his invention factory.. In 1879, after 1,200 experiments, Edison made a light bulb using carbonized filaments from cotton that burned for two days.