| Patents for none listed |
Patents 421 -
435
of 3199
      |
| Number | Date | Patentee | Title | Type |
| 1,276,167 | Aug. 20, 1918 | S.K. Brown | Surface Finishing Machine | |
| 1,276,366 | Aug. 20, 1918 | R.P. Place, J.E. Hoy | Grinding Wheel Dresser | grinder dressers |
| 1,277,970 | Sep. 03, 1918 | N.J. McKenzie | Drilling Bit | |
| 1,277,985 | Sep. 03, 1918 | W. Merrill | Drop Hammer | drop hammers |
| 1,278,084 | Sep. 10, 1918 | J.R. Abbott | Drill | |
| 1,278,629 | Sep. 10, 1918 | H. Francis | Milling and the Like Cutter | milling machine cutters |
| 1,278,706 | Sep. 10, 1918 | J.N. Martin, A.W. Martin | Lock for Grease Caps | |
| 1,279,017 | Sep. 17, 1918 | H.M. Schnabel | Valve Lifter For Automobiles | valve spring tools |
| 1,279,153 | Sep. 17, 1918 | A.W. Peterson | Adjustable Support for Drills and the Like | |
| 1,279,302 | Sep. 17, 1918 | J.M. Dunlap | Drill Gage and Countersink | drill depth stops |
| 1,279,703 | Sep. 24, 1918 | W.A. James | Surface Indicator | measurement gauges |
| 1,279,759 | Sep. 24, 1918 | C.E. Reed | Drill Head | |
| 1,279,917 | Sep. 24, 1918 | E.A. Sagui | Lathe Tool Holder | lathe tool holders and tool posts |
| 1,280,138 | Oct. 01, 1918 | G.C. Blair | Gage | measurement gauges |
| 1,281,015 | Oct. 08, 1918 | W.P. Hunt | Grinding Machine | |
