Statements (12)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:US_patent
|
| gptkbp:applicationDeadline |
1891-05-23
|
| gptkbp:assignee |
gptkb:Thomas_A._Edison
|
| gptkbp:country |
gptkb:United_States
|
| gptkbp:date |
1891-10-27
|
| gptkbp:fieldOfInvention |
cassette tape
|
| https://www.w3.org/2000/01/rdf-schema#label |
U.S. Patent No. 462,093
|
| gptkbp:inventedBy |
gptkb:Thomas_A._Edison
|
| gptkbp:status |
expired
|
| gptkbp:title |
gptkb:Electrically_Operated_Phonograph
|
| gptkbp:bfsParent |
gptkb:Philip_Downing
|
| gptkbp:bfsLayer |
6
|