Which writing instrument, first mass-produced in 1945, revolutionized the writing world with its reliable ink flow and became the preferred tool of many famous 20th century authors?

In the world of arts and literature, the tools writers use can profoundly impact their creative process and output. Throughout history, technological advancements in writing instruments have transformed how authors create their masterpieces. One particular product innovation in the mid-20th century revolutionized writing, making it more convenient and reliable for authors worldwide. Test your knowledge about this significant product design milestone that influenced countless literary works!

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The Parker 51 fountain pen
The Bic ballpoint pen
The Pelikan twist-action mechanical pencil
The Sharpie permanent marker