Statements (13)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:US_patent
|
| gptkbp:assignee |
gptkb:Thomas_Edison
|
| gptkbp:country |
gptkb:United_States
|
| gptkbp:date |
February 8, 1881
|
| gptkbp:fieldOfInvention |
electric lighting
|
| https://www.w3.org/2000/01/rdf-schema#label |
US Patent 237,422
|
| gptkbp:inventedBy |
gptkb:Thomas_Edison
|
| gptkbp:patent |
237,422
|
| gptkbp:relatedTo |
incandescent lamp
|
| gptkbp:status |
expired
|
| gptkbp:title |
lighthouse
|
| gptkbp:bfsParent |
gptkb:Mary_Walton
|
| gptkbp:bfsLayer |
6
|