| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 137/433 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 141,302 | Jul. 29, 1873 | C.J. Weld | Improvement in water-regulators for boilers | stationary boilers | |
| 335,968 | Feb. 09, 1886 | A.A. Shobe | Feed Water Apparatus | feedwater apparatus | |
| 540,760 | Jun. 11, 1895 | S. Sawyer | Automatic air and vacuum valve | radiators | |