Statements (11)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
patent
|
| gptkbp:applicationNumber |
gptkb:US_2,890,131
|
| gptkbp:assignee |
gptkb:Houghton_Mifflin_Company
|
| gptkbp:fieldOfInvention |
book manufacturing
|
| https://www.w3.org/2000/01/rdf-schema#label |
US 2,890,131 B2
|
| gptkbp:inventor |
gptkb:William_H._H._Houghton
|
| gptkbp:issuedOn |
1959-06-16
|
| gptkbp:patentType |
utility
|
| gptkbp:priorityDate |
1956-06-15
|
| gptkbp:status |
expired
|
| gptkbp:title |
Method of making a book
|