Statements (17)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:US_patent
|
| gptkbp:application |
gptkb:US405737A
|
| gptkbp:assignee |
gptkb:Thomas_A._Edison
|
| gptkbp:class |
H01K1/00
|
| gptkbp:country |
gptkb:United_States
|
| gptkbp:describes |
Describes an improvement in electric lamps, specifically the incandescent lamp with a carbon filament.
|
| gptkbp:filingDate |
1879-11-04
|
| gptkbp:inventedBy |
gptkb:Thomas_A._Edison
|
| gptkbp:language |
English
|
| gptkbp:priorityDate |
1879-11-04
|
| gptkbp:publicationDate |
1889-06-25
|
| gptkbp:relatedTo |
gptkb:lighthouse
|
| gptkbp:status |
expired
|
| gptkbp:title |
Improvement in electric lamps
|
| gptkbp:bfsParent |
gptkb:US_patent_405,737
|
| gptkbp:bfsLayer |
8
|
| http://www.w3.org/2000/01/rdf-schema#label |
US405737A
|