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All Patents of Type: low water alarms | |||||
Number | Date | Patentee | Title | Type | |
79,708 | Jul. 07, 1868 | C.S. Watson | Steam Boiler Indicator | low water alarms | |
143,574 | Oct. 14, 1873 | J.C. Hoadley | Dead-Lights for Steam-Boilers | low water alarms | |
188,451 | Mar. 13, 1877 | S. Wheeler | Improvement in indicators | low water alarms | |
1,147,835 | Jul. 27, 1915 | R. Wood | Low Water Alarm for Steam Boilers and the Like | low water alarms | |
1,948,725 | Feb. 27, 1934 | J.D. McClintock | Safey Connection | low water alarms |