| Patents for Charles Hannigan |
Patents 1 -
15
of 15
      |
| Number | Date | Patentee | Title | Type |
| 253,850 | Feb. 21, 1882 | S. Darling | Gas Heating Apparatus | gas and gasoline engines |
| 315,621 | Apr. 14, 1885 | I.L. Holmes | Adustable Stop for Calipers | calipers |
| 422,769 | Mar. 04, 1890 | N.T. Greene | Liberating valve-gear for engines | steam engine valve gear |
| 424,605 | Apr. 01, 1890 | N.T. Greene | Exhaust-valve for engines | steam engine valves |
| 425,219 | Apr. 08, 1890 | N.T. Greene | Exhaust-valve-gear for engines | steam engine valve gear |
| 428,662 | May 27, 1890 | M.J. Bartlett | Screw-Driver | screwdriver handles |
| 432,928 | Jul. 22, 1890 | M.J. Bartlett | Wrench For Screw Drivers | wrenches |
| 444,699 | Jan. 13, 1891 | N.T. Greene | Safety valve-gear for steam-engines | steam engine valve gear |
| 448,742 | Mar. 24, 1891 | L.L. Northrup | Saw setting machine | saw sets |
| 465,045 | Dec. 15, 1891 | S.D. Keene | Bobbin | |
| 479,175 | Jul. 19, 1892 | C.D. Rogers | Wood Screw and Method of Making the Same | screws |
| 481,749 | Aug. 30, 1892 | J.A. Corey | Carriage Wrench | axle nut wrenches |
| 498,348 | May 30, 1893 | A. Anderson | Wrench | bicycle or pocket wrenches |
| 504,698 | Sep. 12, 1893 | A. Anderson | Wrench | screw adjust wrenches |
| 511,414 | Dec. 26, 1893 | J.B. Dolan | Nut Clamp | axle nut wrenches that lock nut to wheel hub |
