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| Patents for Walter H. Cotton | |||||
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| Number | Date | Patentee | Title | Type | |
| 647,946 | Apr. 24, 1900 | W.H. Cotton | Electric Igniter for Gas-Engines | ignition systems | |
| 663,653 | Dec. 11, 1900 | W.H. Cotton | Electric Igniter for Gas-Engines | ignition systems | |