Statements (13)
Predicate | Object |
---|---|
gptkbp:instanceOf |
gptkb:US_patent
|
gptkbp:assignee |
gptkb:Thomas_A._Edison
|
gptkbp:country |
gptkb:United_States
|
gptkbp:filingDate |
1878-05-08
|
https://www.w3.org/2000/01/rdf-schema#label |
US381968A
|
gptkbp:inventedBy |
gptkb:Thomas_A._Edison
|
gptkbp:patent |
381968
|
gptkbp:publicationDate |
1888-05-08
|
gptkbp:status |
expired
|
gptkbp:title |
Improvement in telegraphy
|
gptkbp:bfsParent |
gptkb:Tesla's_polyphase_AC_system_patent
gptkb:US381968A_(electrical_transmission_of_power) |
gptkbp:bfsLayer |
8
|