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| All Patents of Type: speed gearing and transmissions | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,099,520 | Jun. 09, 1914 | W. Spacke, D.T. Brownlee, F.W. Spacke | Change-Speed Gearing | speed gearing and transmissions | |
| 1,427,541 | Aug. 29, 1922 | S.S. Morton | Automobile Transmission | speed gearing and transmissions | |