Statements (10)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:US_patent
|
| gptkbp:country |
gptkb:United_States
|
| gptkbp:date |
July 31, 1837
|
| https://www.w3.org/2000/01/rdf-schema#label |
US Patent 138
|
| gptkbp:inventedBy |
gptkb:John_Ruggles
|
| gptkbp:patent |
138
|
| gptkbp:status |
expired
|
| gptkbp:title |
Improvement in the Mode of Propelling Boats
|
| gptkbp:bfsParent |
gptkb:Samuel_Colt
|
| gptkbp:bfsLayer |
5
|