| All Patents in class 74 |
Patents 2341 -
2355
of 3490
      |
| Number | Date | Patentee | Title | Type |
| 1,653,576 | Dec. 20, 1927 | D.C. Klausmeyer | Lubricating System for Drill Heads | metalworking machine lubrication |
| 1,657,434 | Jan. 24, 1928 | R.T. Hazelton | Circular Feeding Attachment | metal shaper accessories |
| 1,659,304 | Feb. 14, 1928 | R.L. Rickwood, O.E. Schauer | Split Sleeve Frictional Reverser | metalworking power transmission |
| 1,659,426 | Feb. 14, 1928 | C.M. Conradson | Milling Machine | milling machines |
| 1,659,437 | Feb. 14, 1928 | G.E. Merryweather | Double Take-Off Gear | metalworking power transmission |
| 1,660,137 | Feb. 21, 1928 | A.M. Sosa, A.E. Robinson | Drilling Machine | radial drill presses |
| 1,660,477 | Feb. 28, 1928 | C.M. Conradson | Radial Drilling Machine | radial drill presses |
| 1,660,579 | Feb. 28, 1928 | J. Roth | Hammer drill attachment for electric drill | handheld power tool accessories |
| 1,661,131 | Feb. 28, 1928 | G.B. Duffield | Expansible Collapsible Element | steam engine packing |
| 1,662,660 | Mar. 13, 1928 | H.C. Clay | Controller for Variable Speed Transmission | industrial machine speed and direction changing mechanisms |
| 1,662,959 | Mar. 20, 1928 | K.H. Crumrine | Tool Post | lathe tool holders and tool posts |
| 1,663,267 | Mar. 20, 1928 | V.V. Colby | Means for cutting | scrollsaws |
| 1,663,493 | Mar. 20, 1928 | H.C. Clay | Control for Variable Speed Mechanism | industrial machine speed and direction changing mechanisms |
| 1,664,851 | Apr. 03, 1928 | G.M. Class | Tool Post | lathe tool holders and tool posts |
| 1,664,889 | Apr. 03, 1928 | D.C. Klausmeyer | Detachable Gear Unit | metalworking machine gearing |
