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Use this page to browse objects in the Smithsonian Institution Collections. You can also browse additional options using the list menu above. Current result set: 1 documents
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Cams
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Coils
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Electric industries
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Electric lighting
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Electric machinery
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Electrochemistry
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Furnaces
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Jigs and fixtures
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Laboratory
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Lamps
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Litigation
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Patents
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Tubes
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Vacuum pumps
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Vacuum-tubes
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welding
