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| All Patents in class 137/629 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,044,828 | Nov. 19, 1912 | J. Stumpf | Distribution-valve for steam-engines | steam engine valves | |
| 2,319,964 | May 25, 1943 | F.C. Wilson | Hydraulic press | arbor presses | |