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| Patents for Stilwell & Bierce Mfg. Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 44,561 | Oct. 04, 1864 | E.R. Stilwell | Improvement in feed-water heaters and filters | |
 | 274,048 | Mar. 13, 1883 | E.R. Stilwell | Feed-water heater and purifier | |
 | 278,196 | May 22, 1883 | E.R. Stilwell | Feed-water heater | |
 | 384,930 | Jun. 19, 1888 | A.C. Rice | Turbine water-wheel thrust-bearing | |
 | 456,909 | Jul. 28, 1891 | A.C. Rice | Friction-clutch | |