Properties (11)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
Patent
|
| gptkbp:applicationNumber |
US_900000
|
| gptkbp:assignee |
The_McGowan_Company
|
| gptkbp:fieldOfUse |
Electric_Railways
|
| https://www.w3.org/2000/01/rdf-schema#label |
US Patent 900,000
|
| gptkbp:inventor |
John W. McGowan
|
| gptkbp:issuedOn |
April 7, 1908
|
| gptkbp:patentClassification |
Electric_Railways
|
| gptkbp:patentStatus |
Expired
|
| gptkbp:patentType |
Utility Patent
|
| gptkbp:title |
Improvement_in_Electric_Railway_Systems
|