Statements (13)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:intellectual_property
|
| gptkbp:administered_by |
August 2, 1887
|
| gptkbp:application |
US372786 A
|
| gptkbp:country |
gptkb:United_States
|
| gptkbp:field_of_use |
electric lighting
|
| https://www.w3.org/2000/01/rdf-schema#label |
U. S. Patent 372,786
|
| gptkbp:invention |
gptkb:Thomas_A._Edison
utility patent |
| gptkbp:may_be_assigned_to |
gptkb:Edison_Electric_Light_Company
|
| gptkbp:status |
expired
|
| gptkbp:title |
Improvement in Electric Lights
|
| gptkbp:bfsParent |
gptkb:graphophone
|
| gptkbp:bfsLayer |
4
|