| All Patents in class 451/914 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 1,993,823 | Mar. 12, 1935 | G.W. Binns | Art of Grinding | grinding machines |
| 2,111,271 | Mar. 15, 1938 | L.F. Nenninger | Apparatus for Lapping | lapping machines |
| 2,436,466 | Feb. 24, 1948 | J.C. Wilson | Method and Apparatus for Grinding and Lapping | surface grinders |
| 2,624,158 | Jan. 06, 1953 | F.E. Hendrickson | Buffing machine | belt sanders |
| 2,709,324 | May 31, 1955 | H.E. Hull | Method and apparatus for producing saw blades | making sawblades |
| 2,750,718 | Jun. 19, 1956 | S.G. Brady | Method and Apparatus for Grinding Inner Side Faces of Channel Members | grinding attachments |
