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| All Patents in class 285/148.27 | |||||
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| Number | Date | Patentee | Title | Type | |
| 193,088 | Jul. 17, 1877 | B. Holly | Improvement in Street Mains or Pipes for Supplying Large Districts with Heat for Warming Buildings | steam apparatus | |
| RE9,730 | May 31, 1881 | B. Holly | Street-Main | steam heating | |