| Patents for Alexander F. Roberts |
Patents 1 -
10
of 72
      |
| Picture | Number | Date | Patentee | Title |
 | 54,096 | Apr. 24, 1866 | B.F. Bee | Improved screw-tap |
 | 57,565 | Aug. 28, 1866 | P. Pryibil | Improvement in sawmills |
 | 58,726 | Oct. 09, 1866 | J. Hoyt | Improvement in sawing machines |
 | 59,125 | Oct. 23, 1866 | J.N. Dennisson | Improvement in water pumps |
 | 59,882 | Nov. 20, 1866 | T.J. Wells | Improved peat machine |
 | 59,997 | Nov. 27, 1866 | T. Hall | Improvement in sewing-machines |
 | 60,151 | Dec. 04, 1866 | A.T. De Puy | Improvement in printers' galleys |
 | 60,621 | Dec. 18, 1866 | T.H. Cushing | Reciprocating saw for cutting arcs |
 | 61,046 | Jan. 08, 1867 | A. Buell | Improvement in head-blocks for sawmills |
 | RE2,487 | Feb. 19, 1867 | C.W. Coe | Improvement in drilling and bolt-tapping machines |
