| Patents Granted on 1871-02-21 |
Patents 1 -
15
of 17
      |
| Number | Date | Patentee | Title | Type |
| 111,896 | Feb. 21, 1871 | F.H. Aiken | Improvement in machines for cutting and mitering printers' rules | miter machines |
| 111,913 | Feb. 21, 1871 | R. Daniels | Improvement in vegetable-crushers | |
| 111,921 | Feb. 21, 1871 | J.S. Elliott | Improvement in machines for forming artificial stone | |
| 111,927 | Feb. 21, 1871 | L. Griswold | Milling Tool | milling machine tools |
| 111,953 | Feb. 21, 1871 | J. Lough | Improvement in saw-tooth swages | saw sharpening machines |
| 111,975 | Feb. 21, 1871 | A. Rickard | Improvement in plows | |
| 111,990 | Feb. 21, 1871 | O.W. Townsend | Improvement in combined augers and reamers | hollow bits |
| 112,001 | Feb. 21, 1871 | J.P. Woodbury | Improvement in condensing double-end locomotive engines | steam engines |
| 112,007 | Feb. 21, 1871 | J.G. Baker | Improvement in Buck-Saw Frames | frame saws |
| 112,018 | Feb. 21, 1871 | N.T. Coffin | Improvement in pumps | |
| 112,021 | Feb. 21, 1871 | W. Edwards | Spoke Driver | wheelwright |
| 112,036 | Feb. 21, 1871 | B. Hershey | Trip Hammer | trip and helve hammers |
| 112,051 | Feb. 21, 1871 | J. Kievlan | Improvement in lathes | wood lathes |
| 112,062 | Feb. 21, 1871 | W. Miller | Improvement in Carpenters' Plane | floor planes |
| 112,063 | Feb. 21, 1871 | J.C. Mills | Improvement in Auger-Bits | adjustable drill bits |
