Statements (11)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
patent
|
| gptkbp:applicationNumber |
gptkb:US_3,456,818
|
| gptkbp:assignee |
gptkb:Hargreaves_Industries,_Inc.
|
| gptkbp:fieldOfInvention |
composite materials
|
| https://www.w3.org/2000/01/rdf-schema#label |
US 3,456,818 A
|
| gptkbp:inventor |
gptkb:Robert_H._Hargreaves
|
| gptkbp:issuedOn |
July 15, 1969
|
| gptkbp:patentType |
utility
|
| gptkbp:priorityDate |
April 12, 1966
|
| gptkbp:status |
expired
|
| gptkbp:title |
Method of making a composite material
|