Statements (12)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:US_patent
|
| gptkbp:assignee |
gptkb:Albert_Einstein
|
| gptkbp:country |
gptkb:United_States
|
| gptkbp:date |
1905-04-18
|
| gptkbp:fieldOfInvention |
sound reproduction
|
| gptkbp:inventedBy |
gptkb:Albert_Einstein
|
| gptkbp:language |
English
|
| gptkbp:patent |
787,981
|
| gptkbp:title |
Electromagnetic sound reproduction apparatus
|
| gptkbp:bfsParent |
gptkb:Jozef_Murgaš
|
| gptkbp:bfsLayer |
7
|
| http://www.w3.org/2000/01/rdf-schema#label |
US patent 787,981
|