Statements (13)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:patent
|
| gptkbp:bfsLayer |
6
|
| gptkbp:bfsParent |
gptkb:Donald_Hings
|
| gptkbp:application |
Serial No. 123,456
|
| gptkbp:appointed_by |
March 15, 1950
|
| gptkbp:field |
electrical engineering
|
| https://www.w3.org/2000/01/rdf-schema#label |
U. S. Patent 2,500,000
|
| gptkbp:invention |
gptkb:William_H._Mc_Culloch
2,500,000 |
| gptkbp:is_essential_for |
January 1, 1948
|
| gptkbp:participated_in |
gptkb:The_United_States_of_America
|
| gptkbp:status |
expired
|
| gptkbp:title |
Method of and apparatus for producing a high frequency oscillation
|