| Patents for Charles F. Sleeper |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 60,114 | Dec. 04, 1866 | M.M. Ammidown | Improvement in drilling machines | drill presses |
| 88,236 | Mar. 23, 1869 | C.H. Underwood | Improvement in miter-boxes | miter boxes |
| 179,460 | Jul. 04, 1876 | E.F. Meany | Improvement in bottle-holders | T corkscrews and other straight corkscrews |
| 186,783 | Jan. 30, 1877 | H.G. Ashton | Improvement in Safety-Valve Attachments to Utilize the Escape-Steam | steam safety valves |
| 339,886 | Apr. 13, 1886 | G.W. Hill | Counter-balance for cutter-heads | cutterheads |
| 401,894 | Apr. 23, 1889 | I.G. Marston | Table-top for circular saws | tablesaws |
