| Patents for Leonard L. Davis |
Patents 1 -
15
of 17
      |
| Number | Date | Patentee | Title | Type |
| 68,961 | Sep. 17, 1867 | L.L. Davis | Improvement in Adjustable Spirit Levels | metallic levels |
| 75,534 | Mar. 17, 1868 | L.L. Davis | Improvement in Adjustable Spirit Levels | levels |
| D3,195 | Sep. 22, 1868 | L.L. Davis | Design for a Spirit Level | metallic levels |
| 167,311 | Aug. 31, 1875 | L.L. Davis | Improvement in Bench-Planes | plane adjustment mechanisms |
| D10,014 | May 29, 1877 | L.L. Davis | Design for Spirit Levels | metallic levels |
| D10,015 | May 29, 1877 | L.L. Davis | Design for Spirit Levels | metallic levels |
| D10,016 | May 29, 1877 | L.L. Davis | Design for Spirit Levels | metallic levels |
| D10,017 | May 29, 1877 | L.L. Davis | Design for Spirit Levels | machinist levels |
| 288,624 | Nov. 20, 1883 | L.L. Davis | Spirit Level and Plumb | metallic levels |
| 297,574 | Apr. 29, 1884 | L.L. Davis | Spirit Level | metallic levels |
| 306,690 | Oct. 14, 1884 | R.D. Johnson | Bit-stock (chuck) | |
| 342,727 | May 25, 1886 | J.A. Bolen | Ratchet bit-brace | ratchet braces |
| 360,650 | Apr. 05, 1887 | L.C. Bolen | Ratchet bit brace | ratchet braces |
| 371,438 | Oct. 11, 1887 | L.L. Davis | Hack-saw frame | hacksaws |
| 432,180 | Jul. 15, 1890 | L.L. Davis | Bit-stock | brace chucks |
