Download WD-40 Trivia App | Inventions Trivia e-Book PDF | 361
Inventions MCQs (Grade 8) From Textbook

Inventions MCQs – Certification Test 361

WD-40 Trivia (Question 361) – App & e-Book Download

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MCQ 361: WD-40 was patented by:

  1. Sir Nikolaus Otto
  2. Sir John Fitch
  3. Sir John Barber
  4. Sir Norn Larsen
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