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| Patents for Cromwell Fleetwood Varley | |||||
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| Number | Date | Patentee | Title | Type | |
| NF-30 | Oct. 19, 1866 | W. Thomson, C.F. Varley | Transmission of signals of short duration through long lines of submarine cable | telegraphy apparatus | |
| NF-33 | Aug. 31, 1868 | C.F. Varley | 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 | telegraphy apparatus | |