Statements (14)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:US_patent
|
| gptkbp:assignee |
gptkb:Edward_Goodrich_Acheson
|
| gptkbp:country |
gptkb:United_States
|
| gptkbp:date |
1893-03-07
|
| gptkbp:describes |
method for manufacturing carborundum (silicon carbide)
|
| gptkbp:filingDate |
1892-02-28
|
| https://www.w3.org/2000/01/rdf-schema#label |
US492,767 (Carborundum)
|
| gptkbp:inventedBy |
gptkb:Edward_Goodrich_Acheson
|
| gptkbp:relatedTo |
abrasives
silicon carbide |
| gptkbp:status |
expired
|
| gptkbp:title |
Abrasive Material and Manufacture Thereof
|
| gptkbp:bfsParent |
gptkb:Edward_Goodrich_Acheson
|
| gptkbp:bfsLayer |
7
|