| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Bozwell B. Butt | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 283,564 | Aug. 21, 1883 | B.B. Butt | Right Angled Level | machinist levels | |
| 320,537 | Jun. 23, 1885 | B.B. Butt | Spirit Level | metallic levels | |