| Patents for Hartmann Manufacturing Co. |
Patents 1 -
4
of 4
      |
| Number | Date | Patentee | Title | Type |
| 2,563,467 | Aug. 07, 1951 | P. Hartmann | Quick-acting vise having sliding jaw shank clutched by bell-crank cam actuated by an oscillating eccentric | bench vises |
| 2,565,965 | Aug. 28, 1951 | P. Hartmann | Cam for sliding screw-operated vise jaws to final clamping position | machinist vises |
| 3,133,617 | May 19, 1964 | P. Hartmann | Hydraulic variable speed drive | bench vises |
| 3,264,944 | Aug. 09, 1966 | P. Hartmann, G.W. Brand | Fluid pump or motor having roller vanes | hydraulic pumps |
