| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Edward Douglas | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 244,384 | Jul. 19, 1881 | J.W. Douglas | Pump | household hand pumps | |
| 363,321 | May 17, 1887 | E. Douglas | Folding Square | carpenter squares | |
| 386,115 | Jul. 17, 1888 | E. Douglas | Telescopic stop-cock for water-service | water valves | |