| Patents for Joseph W. Douglas |
Patents 16 -
25
of 25
      |
| Number | Date | Patentee | Title | Type |
| 173,601 | Feb. 15, 1876 | J.W. Douglas | Improvement in vehicle-wheels | wheelwright |
| 192,979 | Jul. 10, 1877 | J.W. Douglas | Improvement in portable pumps | household hand pumps |
| 244,384 | Jul. 19, 1881 | J.W. Douglas | Pump | household hand pumps |
| 279,360 | Jun. 12, 1883 | J.W. Douglas | Combined Drill or Reamer, Tap and Socket | taps and dies |
| 280,146 | Jun. 26, 1883 | J.W. Douglas | Cutter and Holder for Lathes | lathe tools |
| 280,147 | Jun. 26, 1883 | J.W. Douglas | Cutter and Holder for Lathes, &c. | lathe tools |
| 280,148 | Jun. 26, 1883 | J.W. Douglas | Cutter and Holder for Lathes, &c. | lathe tools |
| 294,210 | Feb. 26, 1884 | J.W. Douglas | Pump | household hand pumps |
| 306,679 | Oct. 14, 1884 | J.W. Douglas | Pump | household hand pumps |
| 321,804 | Jul. 07, 1885 | J.W. Douglas | Lever Shears | metal shearing machines |
