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Inventions Admission Tests: Mock Test 161
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The Quiz: In which one of following year, pointing stick was invented; "Pointing Stick" App Download [Free] with answers: 1911, 1984, 1952, and 1988 for online school classes. Solve inventions and inventors questions and answers, Google Book to download free chapter for elementary school graduation certificate.
In which one of the following year, pointing stick was invented?
Image dissector was invented by an American television pioneer named
Sir Alexander Graham Bell won the first U.S patent for the device in
Which one of them invents the way to convert Morse code to text?
Kitchen blenders were invented by
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