| Patents Granted on 1928-05-08 |
Patents 1 -
10
of 10
      |
| Number | Date | Patentee | Title | Type |
| 1,668,633 | May 08, 1928 | J.I. Depew | Plowshare and Cultivator Shovel Straightener | shovels |
| 1,668,645 | May 08, 1928 | A. Hormel | Window-cleaning device | |
| 1,668,647 | May 08, 1928 | A.M. Johnson | Feed mechanism for drilling machines | drill presses |
| 1,668,746 | May 08, 1928 | A. Turner | Roll-Grinding Machine | grinding machines |
| 1,668,927 | May 08, 1928 | J. Stumpf | Noncondensing steam engine | steam engines |
| 1,669,006 | May 08, 1928 | H.L. Johnston | Clutch mechanism | industrial machine clutches |
| 1,669,134 | May 08, 1928 | N.T. Kelso | Molded commutator | electric motor making |
| 1,669,137 | May 08, 1928 | A.J. Libert | Tool Holder | lathe tool holders and tool posts |
| 1,669,194 | May 08, 1928 | A.F. Froussard | Portable Milling Machine | milling machines |
| 1,669,319 | May 08, 1928 | R.M. Bennethum | Windmill | wind power apparatus |
