Statements (12)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:US_patent
|
| gptkbp:assignee |
gptkb:Thomas_Edison
|
| gptkbp:country |
gptkb:United_States
|
| gptkbp:date |
1873-08-19
|
| gptkbp:fieldOfInvention |
telegraphy
|
| https://www.w3.org/2000/01/rdf-schema#label |
US Patent 141,878
|
| gptkbp:inventedBy |
gptkb:Thomas_Edison
|
| gptkbp:patent |
141,878
|
| gptkbp:status |
expired
|
| gptkbp:title |
Improvement in telegraphy
|
| gptkbp:bfsParent |
gptkb:Roller_Skates
|
| gptkbp:bfsLayer |
5
|