Inventions Study App | Escalator Trivia e-Book PDF
Inventions MCQs (Grade 8) From Textbook

Inventions MCQs – Certification Test 873

Escalator Trivia (Question 873) – Study App & e-Book Download

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MCQ 873: In which one of the following year, escalator was patented?

  1. 1891
  2. 1997
  3. 1899
  4. 1893

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