Statements (11)
Predicate | Object |
---|---|
gptkbp:instanceOf |
patent
|
gptkbp:applicationNumber |
US_493426
|
gptkbp:assignee |
gptkb:Houghton_&_Dutton
|
gptkbp:class |
gptkb:B61
|
gptkbp:country |
gptkb:United_States
|
gptkbp:fieldOfUse |
railway transportation
|
https://www.w3.org/2000/01/rdf-schema#label |
US 493426 A
|
gptkbp:inventor |
gptkb:William_H._H._Houghton
|
gptkbp:issuedBy |
April 4, 1893
|
gptkbp:status |
expired
|
gptkbp:title |
Improvement_in_the_Construction_of_Railway_Cars
|