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Inventions MCQ Book PDF Download | Straws App

Inventions Competitive Exam: Certification Test 603

Straws MCQ App & e-Book: MCQ 603

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MCQ: 603

Paper drinking straws were patented by

  1. Sir Walter Wingfield
  2. Sir Marvin Stone
  3. Sir Walter Brattain
  4. Sir T.J Blachut

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Straws Competitive Exam: Inventions App & eBook MCQ

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