| Patents for Christopher M. Spencer |
Patents 1 -
7
of 7
      |
| Picture | Number | Date | Patentee | Title |
 | 27,393 | Mar. 06, 1860 | C.M. Spencer | Improvement in Self-Loading Firearms |
 | 137,631 | Apr. 08, 1873 | C.M. Spencer | Improvement in machines for turning heads of bobbins |
 | 222,162 | Dec. 02, 1879 | C.M. Spencer | Improvement in cartridge-capping implements |
 | 275,431 | Apr. 10, 1883 | C.M. Spencer | Metal Screw Machine |
| | 447,017 | Feb. 24, 1891 | C.M. Spencer | Screw Machine |
 | 480,974 | Aug. 16, 1892 | C.M. Spencer | Nail-puller |
| | 816,393 | Mar. 27, 1906 | C.M. Spencer | Threading Mechanism for Automatic Screw Machines |
