| Patents for none listed |
Patents 571 -
585
of 3142
      |
| Number | Date | Patentee | Title | Type |
| 1,382,794 | Jun. 28, 1921 | M.L. Luebben | Machine for Sharpening Safety Razor Blades | household tools |
| RE15,162 | Jul. 26, 1921 | C.J. Bousfield | Device For Removing Puppet Valves | valve spring tools |
| D58,467 | Jul. 26, 1921 | F.S. Durham | Pliers | pliers |
| 1,385,491 | Jul. 26, 1921 | G.G. Porter | Back-facing attachment for lathes | metal lathe accessories and attachments |
| 1,385,516 | Jul. 26, 1921 | W.A. Bernard | Hand Tool | pliers |
| 1,385,994 | Aug. 02, 1921 | A.B. Heimbach | Quickly Adjustable Wrench | quick adjust wrenches |
| 1,386,708 | Aug. 09, 1921 | J.C. Hurley | Wrench | ratchet wrenches |
| 1,387,040 | Aug. 09, 1921 | F.C. Brandenburg | Tool for Dressing Emery Wheels | grinder dressers |
| 1,388,034 | Aug. 16, 1921 | G. Gillespie | Extension Micrometer | micrometers |
| 1,389,584 | Sep. 06, 1921 | G.W. Goodridge | Splicing Tool | pliers |
| 1,390,371 | Sep. 13, 1921 | C. Meyer | Wrench | automotive specialty wrenches |
| 1,391,016 | Sep. 20, 1921 | H.R. Slider, W.T. Slider | Micrometer | micrometers |
| 1,392,313 | Oct. 04, 1921 | G.S. Fallow | Screw Thread Gage | special purpose gauges |
| 1,392,391 | Oct. 04, 1921 | F.E. Bartz | Quick Adjustable Monkey Wrench | quick adjust wrenches |
| 1,392,443 | Oct. 04, 1921 | W. Petersen | Wrench | locking pliers |
