Statements (14)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
patent
|
| gptkbp:applicationNumber |
gptkb:US_2,123,439
|
| gptkbp:citedBy |
US_3,000,000
|
| gptkbp:class |
H01Q
|
| gptkbp:fieldOfInvention |
electrical engineering
|
| https://www.w3.org/2000/01/rdf-schema#label |
US 2,123,439
|
| gptkbp:inventor |
unknown
|
| gptkbp:issuedBy |
unknown
|
| gptkbp:issuedOn |
1938-07-12
|
| gptkbp:patentType |
utility
|
| gptkbp:relatedTo |
US_2,000,000
|
| gptkbp:status |
expired
|
| gptkbp:subclass |
H01Q 1/00
|
| gptkbp:title |
Method of and apparatus for producing a high frequency oscillation
|