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| All Patents in class 137/861 | |||||
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| Number | Date | Patentee | Title | Type | |
| RE4,373 | May 09, 1871 | B. Holly | Improvement in Systems of Water-supplies for Cities | water distribution systems | |
| 401,452 | Apr. 16, 1889 | L.H. Nash | Fuel Mixing Device for Gas Engines | carburetors | |
| 3,182,488 | May 11, 1965 | A.R. Hollister | Fluid Gage Adjusting Unit | pneumatic measuring gauges | |