patent model, railway circuit closer
date: label: date made
content: ca 1873
label: date made
content: ca. 1873
label: patent date
content: 1873-08-26
name: label: inventor
content: Spang, Henry W.
notes: label: Location
content: Currently not on view
place: label: associated place
content: United States: Pennsylvania, Reading
setName: label: See more items in
content: Work and Industry: Transportation, Railroad
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: TR.309223
label: catalog number
content: 309223
label: patent number
content: 142,131
objectType: label: Object Name
content: patent model, railway circuit closer
label: Other Terms
content: switch, track, electromagnetic; patent model, railway circuit closer; Rail