| Patents for none listed |
Patents 436 -
450
of 3142
      |
| Number | Date | Patentee | Title | Type |
| 1,283,884 | Nov. 05, 1918 | G.A. Kellner, W.L. Patterson | Microscope | |
| 1,284,017 | Nov. 05, 1918 | H.L. Wiltstein | Gage | gauges |
| 1,284,439 | Nov. 12, 1918 | G.F. Kolb, H.A. Pedrick | Method of Making Piston Rings | making piston rings |
| 1,284,543 | Nov. 12, 1918 | W.F. Zimmermann | Gear Planer | metal shaper accessories |
| 1,285,041 | Nov. 19, 1918 | G.C. Clark | Surface Dressing Machine | |
| 1,285,478 | Nov. 19, 1918 | G.R. Van Auken | Grease Cup | |
| 1,285,712 | Nov. 26, 1918 | H.R. Hughes | Horizontal Drilling Machine | |
| 1,286,465 | Dec. 03, 1918 | E.N. Gilstrap, W.H. Whited | Saw | special purpose saws |
| 1,286,977 | Dec. 10, 1918 | P.P. Fenaux | Grinding Machine | grinding machines |
| 1,287,024 | Dec. 10, 1918 | R.P. Place, J.E. Hoy | Grinding Wheel Dresser | grinder dressers |
| 1,287,203 | Dec. 10, 1918 | A.M. Saunders, P. Boyd | Drill Tube Section | well digging or drilling tools |
| 1,287,731 | Dec. 17, 1918 | F. Müller | Automatic Grinding Machine | grinders |
| 1,287,732 | Dec. 17, 1918 | F. Müller | Machine for Milling Knurls | embossing and knurling machines |
| 1,288,788 | Dec. 24, 1918 | A. Zimmermann | Micrometer | micrometers |
| 1,288,903 | Dec. 24, 1918 | A.H. Ingle | Axle Lathe | metal lathes |
