| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for B. D. Hall | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 232,821 | Oct. 05, 1880 | B. Holly | Steam Heating Radiator | steam heating | |
| 241,217 | May 10, 1881 | B. Holly | Meter | steam heating | |
| RE9,730 | May 31, 1881 | B. Holly | Street-Main | steam heating | |
| 246,952 | Sep. 13, 1881 | B. Holly | Steam Pressure Regulator | steam heating | |
| 260,097 | Jun. 27, 1882 | B. Holly | Apparatus for Supplying Steam | steam heating | |