| All Patents in class 451/306 |
Patents 1 -
10
of 14
      |
| Picture | Number | Date | Patentee | Title |
 | 179,167 | Jun. 27, 1876 | H.M. Du Bois | Improvement in polishing-machines |
| | 330,890 | Nov. 24, 1885 | J.M. Gilbert | Polishing mechanism for turning-lathes |
| | 386,792 | Jul. 24, 1888 | L. Switzer | Machine for polishing rods |
 | 430,398 | Jun. 17, 1890 | J.M. Nash | Machine for smoothing curved surfaces |
| | 624,882 | May 09, 1899 | F. Unkrich | Spoke-finishing machine |
 | 679,611 | Jul. 30, 1901 | G.A. Ensign | Spoke-finishing machine |
 | 719,769 | Feb. 03, 1903 | G.A. Ensign | Spoke-finishing machine |
 | 910,634 | Jan. 26, 1909 | O. Allen | Felly-polishing machine |
| | 960,408 | Jun. 07, 1910 | J.L. Nolan, F.C. Rowell | Abrading-machine |
 | 980,054 | Dec. 27, 1910 | J. Hausman, J.C. Blevney | Abrasive machine |
