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12 questions · For everyone · Technology and IT

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Vad tog ungraren László Bíró patent på?

Adrian Tync, CC BY-SA 4.0
- Tuschpennan
- Reservoarpennan
- Blyertspennan
- Kulspetspennan
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Kulspetspennan
George de Mestral fick idén till kardborrebandet när kardborrar fastnade i hans hunds päls.
- True
- False
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True
Vad kom Percy Spencer på när en godisbit smälte i hans ficka medan han arbetade med radar?
- Kylskåpet
- Brödrosten
- Diskmaskinen
- Mikrovågsugnen
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Mikrovågsugnen

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