Statements (14)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:US_patent
|
| gptkbp:assignee |
gptkb:Thomas_A._Edison
|
| gptkbp:class |
H01K1/00
|
| gptkbp:country |
gptkb:United_States
|
| gptkbp:describes |
Describes improvements in electric lamps, specifically the incandescent lamp.
|
| gptkbp:filingDate |
1879-11-04
|
| gptkbp:inventedBy |
gptkb:Thomas_A._Edison
|
| gptkbp:patent |
405743
|
| gptkbp:publicationDate |
1889-06-25
|
| 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 |
US405743A
|