General Knowledge :: Inventions
- What African-American inventor received 5 patents in the field of shoemaking?
- It travels over land and water. Who invented the HOVERCRAFT?
- What type of system did Paul Nipkow, John Baird, and Charles Jenkins all invent?
- Who invented Bicycle?
- Who synthesized the first wholly artificial gene?
- FROZEN FOOD - Who discovered the first practical method of freezing food?