Statements (12)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:US_patent
|
| gptkbp:assignee |
gptkb:Thomas_Edison
|
| gptkbp:country |
gptkb:United_States
|
| gptkbp:date |
1897-11-30
|
| gptkbp:fieldOfInvention |
Sound recording
|
| https://www.w3.org/2000/01/rdf-schema#label |
US 594,390
|
| gptkbp:inventedBy |
gptkb:Thomas_Edison
|
| gptkbp:patent |
594,390
|
| gptkbp:status |
expired
|
| gptkbp:title |
Phonograph
|
| gptkbp:bfsParent |
gptkb:US_Patent_3991315
|
| gptkbp:bfsLayer |
7
|