patent model, Gray circuit breaker for harmonic telegraph, US #173460
date: label: date made
content: 1875
name: label: maker
content: Gray, Elisha
notes: label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.308881
label: catalog number
content: 308881
label: accession number
content: 89797
label: patent number
content: 173460
objectType: label: Object Name
content: Telegraph Circuit Breaker, Electro Harmonic
label: Object Name
content: circuit breaker
physicalDescription: label: Measurements
content: overall: 2 3/4 in x 1 5/8 in x 11 3/4 in; 6.985 cm x 4.1275 cm x 29.845 cm