What was the primary motivation for John J. Loud securing the first ballpoint pen patent in 1888?

Answer

To create a marker that could write on rough surfaces like wood or leather

John J. Loud, a leather tanner, specifically needed a marker capable of functioning on irregular and coarse surfaces that contemporary fountain pens could not handle without smearing.

What was the primary motivation for John J. Loud securing the first ballpoint pen patent in 1888?
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