| Patents for Albert A. Barker |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 205,225 | Jun. 25, 1878 | H.C. Wight | Calipers | measurement gauges |
| 239,933 | Apr. 12, 1881 | T.F. Carver | Friction-clutch | industrial machine clutches |
| 250,166 | Nov. 29, 1881 | F.F. Parker | Chair leg and arm mortising machine | chair maker |
| 275,393 | Apr. 10, 1883 | L.J. Knowles | Machine for Forming Key-Seats in Hubs of Gears, &c. | metalworking machines |
| 381,141 | Apr. 17, 1888 | R.T. Torkelson, I. Johnson | Bench Plane | plane throat adjustments |
| 818,633 | Apr. 24, 1906 | P. Lord | Saw-File | files |
