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| All Patents in class 285/148.27 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 193,088 | Jul. 17, 1877 | B. Holly | Improvement in Street Mains or Pipes for Supplying Large Districts with Heat for Warming Buildings | |
 | RE9,730 | May 31, 1881 | B. Holly | Street-Main | |
 | 771,951 | Oct. 11, 1904 | V.J. Wahlstrom | Coupling | |