| Patents for H. S. Sprague |
Patents 1 -
15
of 99
      |
| Number | Date | Patentee | Title | Type |
| 75,552 | Mar. 17, 1868 | H.N. King | Woodworker's Leg Vise Jaw | leg vises |
| 82,926 | Oct. 13, 1868 | L. Phillips, F.A. Deland | Improvement in mortising-machines | mortising machines |
| 84,722 | Dec. 08, 1868 | J.L. Warren | Improvement in saws | dovetail saws |
| 98,475 | Jan. 04, 1870 | J. Davies | Improvement in Spoke-Shave | spokeshaves |
| 101,249 | Mar. 29, 1870 | J. Flower | Improvement in Lathes for Squared Nuts, etc. | nut or bolt making machines |
| 101,258 | Mar. 29, 1870 | G.B. Goodnow | Improvement in saws | saw teeth |
| 101,343 | Mar. 29, 1870 | E. Andrews | Improvement in saw-mills | reciprocating sawmills |
| 111,164 | Jan. 24, 1871 | E. Andrews | Improvement in saws | saw teeth |
| 112,883 | Mar. 21, 1871 | E. Andrews | Improvement in saw-mills | reciprocating sawmills |
| 118,806 | Sep. 12, 1871 | R.M. Lafferty, E.P. Smith | Improvement in augers | hollow bits |
| 128,189 | Jun. 18, 1872 | C.A. Towar | Improvement in wood-sawing machines | firewood machines |
| 129,378 | Jul. 16, 1872 | J.B. Wayne | Improvement in head-blocks for sawmills | sawmill headblocks |
| 131,252 | Sep. 10, 1872 | J. Craig | Improvement in Self-Adjusting Pipe Wrenches | pipe wrenches |
| 133,135 | Nov. 19, 1872 | A.A. Wilder | Improvement in bolt-machines | |
| RE5,187 | Dec. 17, 1872 | E.C. Dicey | Improvement in machines for turning logs | sawmill accessories |
