Questions:
1) Who created the first known design of a robot?
2) What Hollywood actress patented a missile guidance system?
3) Which of the Marx Brothers invented a special watch for cardiac patients?
4) Who originally held the patent for stand-up advertising cards on restaurant tables?
Answers:
1) Leonardo da Vinci
2) Hedy Lamar
3) Zeppo
4) Lawrence Welk
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