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The Fountain Pen Patent Archive

The instruments that put ink under pressure

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Patent drawing showing a hand holding a corrugated metal pen while writing, with detailed close-up views of the pen's W-shaped folded tip and cross-sections showing the corrugations and ink passages.

PEN.Addis Morgan Henry · May 15, 1894

United States patent drawings and specifications are works of the U.S. government and are in the public domain — they were never copyrighted. Download them, print them, frame them. Our commentary and descriptions are © 2026 The Fountain Pen Patent Archive.

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