Statements (14)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:US_patent
|
| gptkbp:assignee |
gptkb:Thomas_A._Edison
|
| gptkbp:country |
gptkb:United_States
|
| gptkbp:date |
1884-10-21
|
| gptkbp:describes |
Patent for an improvement in electric lamps, specifically the incandescent lamp.
|
| gptkbp:filingDate |
1879-08-27
|
| gptkbp:inventedBy |
gptkb:Thomas_A._Edison
|
| gptkbp:patent |
306727
|
| gptkbp:relatedTo |
gptkb:incandescent_lamp
|
| gptkbp:status |
expired
|
| gptkbp:title |
Improvement in electric lamps
|
| gptkbp:bfsParent |
gptkb:Marcellus_Gilmore_Edson
|
| gptkbp:bfsLayer |
8
|
| http://www.w3.org/2000/01/rdf-schema#label |
US306727A
|