Statements (6)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
patent number
|
| gptkbp:country |
gptkb:United_States
|
| gptkbp:documentType |
gptkb:US_patent
|
| https://www.w3.org/2000/01/rdf-schema#label |
US200521
|
| gptkbp:bfsParent |
gptkb:cassette_tape
|
| gptkbp:bfsLayer |
4
|