Bradley helices for magnets, patent #49,074

Bradley helices for magnets, patent #49,074

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Location
Currently not on view
Object Name
Coil, Pair of
magnetic coil
Other Terms
Coil, Pair of; Magnetic Devices
Date made
1865
Measurements
overall: 2 1/2 in x 5/8 in; x 6.35 cm x 1.5875 cm
ID Number
EM.252667
catalog number
252667
accession number
49064
patent number
49074
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Work and Industry: Electricity
Data Source
National Museum of American History
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