NF Patent: NF-33
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Improvements in telegraphing, cutting off disturbance caused by earth currents, obtaining a high speed of signalling through long circuits, and preservation of exposed condition by electro-lythic action
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Patentee:
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Cromwell Fleetwood Varley (exact or similar names) - New York, NY |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Granted: |
Aug. 31, 1868 |
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Jeff Joslin
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Description: |
See Newfoundland patent NF-30 for more information on the inventor. |
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