Statements (13)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:intellectual_property
|
| gptkbp:administered_by |
June 12, 1889
|
| gptkbp:application |
395781
|
| gptkbp:country |
gptkb:United_States
|
| gptkbp:field_of_use |
paper manufacturing
|
| https://www.w3.org/2000/01/rdf-schema#label |
U. S. Patent 395,781
|
| gptkbp:invention |
utility patent
George W. H. Houghton |
| gptkbp:may_be_assigned_to |
gptkb:Houghton_&_Dutton
|
| gptkbp:status |
expired
|
| gptkbp:title |
Improvement in the Art of Making Paper
|
| gptkbp:bfsParent |
gptkb:Herman_Hollerith
|
| gptkbp:bfsLayer |
6
|