Statements (13)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:patent
|
| gptkbp:bfsLayer |
4
|
| gptkbp:bfsParent |
gptkb:Samuel_F._B._Morse
|
| gptkbp:application |
gptkb:unknown
|
| gptkbp:appointed_by |
gptkb:John_A._Mc_Culloch
1840-06-15 |
| gptkbp:country |
gptkb:United_States
|
| gptkbp:field |
mechanical engineering
|
| https://www.w3.org/2000/01/rdf-schema#label |
U. S. Patent 1647
|
| gptkbp:invention |
1647
utility patent |
| gptkbp:is_described_as |
improvement in the construction of machines for making nails.
|
| gptkbp:status |
expired
|