104. Who was the first person to patent the JET ENGINE?
105. The initials JCB on earth-moving equipment are those of the founder of the company that makes it. What is his name?
106. What treat was invented by 11-year-old Frank Epperson in 1905?
107. When was Milk Tray first introduced?
108. When was the toothbrush invented?
109. What item of apparel was invented by Ellery Chun, a Hawaiian clothing merchant, in 1931?
110. Who invented Fountain Pen?
111. Who invented the BALLPOINT PEN?
112. In which decade was the first solid state integrated circuit demonstrated?
113. What J. B. Dunlop invented?
114. Which scientist discovered the radioactive element radium?
115. When was barb wire patented?
116. What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes?
117. What Galileo invented?
118. This statesman, politican, scholar, inventor, and one of early presidents of USA invented the swivel chair, the spherical sundial, the moldboard plow, and the cipher wheel.