Statements (14)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:US_patent
|
| gptkbp:applicationDeadline |
1879-11-04
|
| gptkbp:assignee |
gptkb:Thomas_Edison
|
| gptkbp:citation |
numerous subsequent patents
|
| gptkbp:country |
gptkb:United_States
|
| gptkbp:date |
1880-01-27
|
| gptkbp:describes |
incandescent electric lamp
|
| gptkbp:inventedBy |
gptkb:Thomas_Edison
|
| gptkbp:patent |
223,898
|
| gptkbp:status |
expired
|
| gptkbp:title |
Improvement in Electric Lamps
|
| gptkbp:bfsParent |
gptkb:US_patent_405,743
|
| gptkbp:bfsLayer |
8
|
| http://www.w3.org/2000/01/rdf-schema#label |
US patent 223,898
|