Statements (8)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
telephone switchboard
|
| https://www.w3.org/2000/01/rdf-schema#label |
Putnam 610 console
|
| gptkbp:introduced |
20th century
|
| gptkbp:manufacturer |
gptkb:Putnam
|
| gptkbp:used_in |
telephone operators
|
| gptkbp:usedFor |
manual telephone call routing
|
| gptkbp:bfsParent |
gptkb:610_Tube_Preamp
|
| gptkbp:bfsLayer |
6
|