| Patents Granted on 1871-03-21 |
Patents 1 -
15
of 23
      |
| Number | Date | Patentee | Title | Type |
| 112,780 | Mar. 21, 1871 | F. Castle | Improvement in Combined Gauges and Try Squares | clapboard markers |
| 112,786 | Mar. 21, 1871 | N. Clute | Improvement in Coating Gas and Water Pipes | pipes |
| 112,788 | Mar. 21, 1871 | J. Creager | Improvement in sawing-machine tables | tablesaws |
| 112,793 | Mar. 21, 1871 | W.C. Ellis | Improvement in Adjustable Bevels | bevels |
| 112,794 | Mar. 21, 1871 | J. Felton | Improvement in sawing-machines | drag saws |
| 112,799 | Mar. 21, 1871 | R. French | Improvement in bit-braces | brace chucks |
| 112,801 | Mar. 21, 1871 | J. Good | Improvement in Vises for Joiner's Use | |
| 112,821 | Mar. 21, 1871 | C. Levey | Improvement in planing-machines | wood planers |
| 112,838 | Mar. 21, 1871 | J.L. Otis | Improvement in machines for grinding saw-teeth | saw sharpening machines |
| 112,842 | Mar. 21, 1871 | G.G. Parker, W.P. Dodge | Improvement in bit and drill-braces | brace chucks |
| 112,847 | Mar. 21, 1871 | T. Reeves | Lubricator | steam engine lubricators |
| 112,860 | Mar. 21, 1871 | G.B. Soley | Improvement in hand-tools for carving and engraving | carving chisels |
| 112,861 | Mar. 21, 1871 | F.L. Sprague | Improvement in gauges for saw-tables | tablesaw accessories |
| 112,883 | Mar. 21, 1871 | E. Andrews | Improvement in saw-mills | reciprocating sawmills |
| 112,902 | Mar. 21, 1871 | A. Clarke | Improvement in Shoemaker's Hammers | hammers |
