子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | Water-level indicator | US3459725 | 1925-06-03 | US1681452A | 1928-08-21 | WHITE RAYMOND E |
| 102 | Pressure generator for regulating devices | US53978922 | 1922-02-27 | US1611987A | 1926-12-28 | BARRETT JOSEPH M |
| 103 | Automatic controller for liquid levels | US44881821 | 1921-03-01 | US1563097A | 1925-11-24 | MILKER HERBERT P |
| 104 | Water-flow device | US17746017 | 1917-06-28 | US1396239A | 1921-11-08 | ANDREWS ROGER W |
| 105 | Feeding water to boilers. | US6045515 | 1915-11-08 | US1299283A | 1919-04-01 | ANDREWS ROGER W |
| 106 | Feed-water regulator. | US1914879615 | 1914-12-29 | US1184862A | 1916-05-30 | MCCORMICK JOHN; SIMPSON HUGH A; HILL BUCHANAN HOUSTON |
| 107 | Thermostatic arch flow-regulator. | US1914874549 | 1914-11-28 | US1172709A | 1916-02-22 | HOPKINS FRANK H |
| 108 | Method of feeding water to boilers. | US1914867337 | 1914-10-19 | US1148483A | 1915-07-27 | ANDREWS ROGER W |
| 109 | Automatic boiler-feed regulator. | US1911642489 | 1911-08-05 | US1075043A | 1913-10-07 | KRICHBAUM WILLIAM F |
| 110 | Feed-water regulator. | US1912678109 | 1912-02-16 | US1051302A | 1913-01-21 | ZIERDEN WILLIAM E |
| 111 | Thermostatic liquid-level regulator. | US1911632448 | 1911-06-10 | US1047769A | 1912-12-17 | EAST WALTER; DOBBS ARCHIBALD EDWARD; HOWKINS JOHN SHIRLEY |
| 112 | Boiler-feed-water regulator. | US1910595968 | 1910-12-06 | US999317A | 1911-08-01 | KNAPP DAVID R; CADE HOWARD E |
| 113 | Water-level regulator and indicator. | US976741D | US976741A | 1910-11-22 | LANE GEORGE | |
| 114 | Feed-water regulator. | US1908458086 | 1908-10-16 | US935651A | 1909-10-05 | FOGG JOHN L |
| 115 | Thermostatic boiler-feed regulator. | US1908424875 | 1908-04-03 | US897244A | 1908-08-25 | WHITE ORRIS O |
| 116 | Feed-water regulator. | US1906327154 | 1906-07-21 | US849301A | 1907-04-02 | WESTCOTT LOUIS |
| 117 | Boiler-feed-regulating mechanism. | US1906303724 | 1906-03-01 | US848476A | 1907-03-26 | LOUDON WILLIAM |
| 118 | Boiler-feed regulator. | US1905283790 | 1905-10-21 | US822794A | 1906-06-05 | WHITE ORRIS O |
| 119 | Feed-water regulator. | US1905241693 | 1905-01-18 | US819078A | 1906-05-01 | OFELDT ERNEST G |
| 120 | Boiler-feeder. | US1905257090 | 1905-04-24 | US814305A | 1906-03-06 | LEADBEATER FREDERICK |
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