| Patents for Robert G. Henry |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 278,225 | May 22, 1883 | R. Crittenden, R.G. Henry | Calipers | calipers |
| 795,123 | Jul. 18, 1905 | R.G. Henry, D.M. Wright | Drill-spindle | drill presses |
| 805,546 | Nov. 28, 1905 | R.G. Henry, D.M. Wright | Drill-spindle-driving mechanism | drill presses |
| 825,273 | Jul. 03, 1906 | R.G. Henry | Feed mechanism for drill-spindles | drill presses |
| 928,489 | Jul. 20, 1909 | W.G. Allen, R.G. Henry | Screw-thread-cutting mechanism | screw machines |
| 1,073,683 | Sep. 23, 1913 | W.J. Bayrer, R.G. Henry | Belt-shifter | metalworking power transmission |
