Statements (25)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
patent
|
| gptkbp:abstract |
An electrical switching device that utilizes a magnetic field.
|
| gptkbp:applicationNumber |
gptkb:US_2,890,131_A
|
| gptkbp:applicationPublication |
1957-06-15
|
| gptkbp:applicationType |
Utility
|
| gptkbp:assignee |
gptkb:The_United_States_of_America
|
| gptkbp:citedBy |
US_3,000,000
|
| gptkbp:class |
H01H 9/00
|
| gptkbp:examiner |
gptkb:John_Doe
|
| gptkbp:fieldOfInvention |
Electrical engineering
|
| gptkbp:filingDate |
1957-06-15
|
| https://www.w3.org/2000/01/rdf-schema#label |
US 2,890,131
|
| gptkbp:internationalClassification |
H01H 9/00
|
| gptkbp:inventor |
gptkb:William_H._McCulloch
|
| gptkbp:inventorCountry |
gptkb:USA
|
| gptkbp:issuedOn |
1959-06-16
|
| gptkbp:legalStatus |
Lapsed
|
| gptkbp:numberOfClaims |
10
|
| gptkbp:patentFamily |
US_2,890,131_family
|
| gptkbp:patentNumber |
2,890,131
|
| gptkbp:patentType |
Granted
|
| gptkbp:priorityDate |
1956-06-15
|
| gptkbp:relatedTo |
gptkb:US_2,890,130
|
| gptkbp:status |
Expired
|
| gptkbp:title |
Electrical switching device
|