Statements (12)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:patent
|
| gptkbp:bfsLayer |
4
|
| gptkbp:bfsParent |
gptkb:phonautograph
|
| gptkbp:application |
gptkb:CEO
|
| gptkbp:appointed_by |
gptkb:Charles_E._Smith
|
| gptkbp:country |
gptkb:United_States
|
| gptkbp:field |
paper manufacturing
|
| https://www.w3.org/2000/01/rdf-schema#label |
US patent 186,000
|
| gptkbp:invention |
utility
|
| gptkbp:status |
expired
|
| gptkbp:title |
Improvement in the manufacture of paper
|
| gptkbp:year_created |
1877-01-02
|