| Patents for H. S. Sprague |
Patents 16 -
30
of 99
      |
| Number | Date | Patentee | Title | Type |
| 136,807 | Mar. 18, 1873 | H. Balcom | Improvement in machines for pointing pickets | stick pointing machines |
| 136,886 | Mar. 18, 1873 | A.A. Wilder | Improvement in dummy or traction engines | |
| 138,270 | Apr. 29, 1873 | J.C. Moore | Improvement in log-turners | sawmill log handling |
| 138,505 | May 06, 1873 | T.J. Frazier, C. Lamb | Improvement in machines for trimming lumber | sawmills |
| 140,136 | Jun. 24, 1873 | N.J. Holt, J. Leach | Improvement in clamps | clamps |
| 142,731 | Sep. 09, 1873 | E.G. Richards | Improvement in cutter-heads for planing-machines | cutterheads |
| 142,733 | Sep. 09, 1873 | H.C. Rosin | Improvement in circular-saw tables | tablesaws |
| 148,316 | Mar. 10, 1874 | G.C. Miller | Improvement in Try-Squares and Bevels | bevels |
| 149,052 | Mar. 31, 1874 | G.C. Miller | Improvement in Dividers | dividers |
| 150,534 | May 05, 1874 | T. Craney | Improvement in saw-mill dogs | sawmill dogs |
| 156,193 | Oct. 20, 1874 | J.B. Wayne | Improvement in saw-mills | reciprocating sawmills |
| 157,168 | Nov. 24, 1874 | J.A. Fordon | Improvement in saw-mill dogs | sawmill dogs |
| 162,356 | Apr. 20, 1875 | T. Doyle | Improvement in saw-filing machines | saw sharpening machines |
| 165,555 | Jul. 13, 1875 | H. Fowler | Improvement in machines for cutting hoops | hoop making machines |
| RE6,777 | Nov. 30, 1875 | G.H. Shearer | Improvement in log-turners for saw-mill | sawmills |
