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| All Patents in class 137/627.5 | |||||
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| Number | Date | Patentee | Title | Type | |
| 659,003 | Oct. 02, 1900 | D. Smail, C.W. Taylor | Valve-Operating Mechanism | steam engine valve gear | |
| 675,528 | Jun. 04, 1901 | R.A. Rutherford | Valve Device for Pneumatic Hoists | industrial valves | |
| 1,693,109 | Nov. 27, 1928 | W. Ernst | Semiautomatic Valve | hydraulic valves | |