Multiple choice general knowledge

What did Norweigian Johan Vaaler patent in America in 1901? The invention came about due to a practical difficulty he experienced at the workplace.

  1. Envelopes

  2. Stapler

  3. Paper clip

  4. Chair with wheels
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Johan Vaaler patented the paper clip in 1901 in America. As a Norwegian patent clerk, he needed a better way to organize papers, leading to his invention of the classic paper clip design. While not the first paper clip inventor, his design became one of the most recognizable office supplies globally.

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