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| All Patents in class 137/318 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 74,961 | Feb. 25, 1868 | A. Weed | Improvement in boring-faucets | |
 | 184,686 | Nov. 21, 1876 | J. Miller | Machines for Tapping Pipes Under Pressure | |
 | 265,624 | Oct. 10, 1882 | H. Mueller | Machine For Tapping Mains | |
 | 425,480 | Apr. 15, 1890 | A.W. Meston | Champagne-tap | |
| 592,007 | Oct. 19, 1897 | S.G. Howe | Shut Off and Pipe Drilling Device | ||
 | 649,173 | May 08, 1900 | H. Mueller | Tapping-machine | |