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| Patents for Edwin R. Stilwell | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 44,561 | Oct. 04, 1864 | E.R. Stilwell | Improvement in feed-water heaters and filters | |
| 158,997 | Jan. 19, 1875 | E.R. Stilwell | Cases for Turbine Water-Wheels | ||
| 195,855 | Oct. 02, 1877 | E.R. Stilwell | Turbine Water-Wheels | ||
 | 274,048 | Mar. 13, 1883 | E.R. Stilwell | Feed-water heater and purifier | |
 | 278,196 | May 22, 1883 | E.R. Stilwell | Feed-water heater | |
 | 510,300 | Dec. 05, 1893 | E.R. Stilwell | Feed-water-purifier attachment | |