Riverboat flotation device patent
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Patent received by Lincoln in 1849 for a flotation device for moving riverboats in shallow water; Lincoln is the only U.S. president to hold a patent.
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Mutual Connections
Entities connected to Riverboat flotation device patent through shared intermediaries, but not directly linked.
Person
Nancy Hanks Lincoln
Connected via: Abraham Lincoln
Document
Hurd v. Rock Island Bridge Company
Connected via: Abraham Lincoln
Person
Roger Taney
Connected via: Abraham Lincoln
Organization
Conspiracy Museum
Connected via: Abraham Lincoln
Person
William Berry
Connected via: Abraham Lincoln
Key Relationships
Owned
- Person Abraham Lincoln - Lincoln received a patent in 1849 for a flotation device, making him the only U.S. president to hold a patent. Official Document
Source Documents & Evidence
“In 1849 he received a patent for a flotation device for the movement of riverboats in shallow water”Accessed: 2026-02-21
patentinvention
Added: 2026-02-21
· Updated: 2026-02-21
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