Statements (14)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:US_patent
|
| gptkbp:assignee |
gptkb:Thomas_Edison
|
| gptkbp:class |
H01K
|
| gptkbp:country |
gptkb:United_States
|
| gptkbp:date |
1886-05-04
|
| gptkbp:describes |
Describes an improvement in electric lamps, specifically the carbon filament lamp.
|
| gptkbp:filingDate |
1879-11-04
|
| https://www.w3.org/2000/01/rdf-schema#label |
US Patent 341,214
|
| gptkbp:inventedBy |
gptkb:Thomas_Edison
|
| gptkbp:relatedTo |
lighthouse
|
| gptkbp:status |
expired
|
| gptkbp:title |
Improvement in Electric Lamps
|
| gptkbp:bfsParent |
gptkb:Volta_Laboratory
|
| gptkbp:bfsLayer |
4
|