| All Patents in class 451/360 |
Patents 16 -
30
of 32
      |
| Number | Date | Patentee | Title | Type |
| 1,391,039 | Sep. 20, 1921 | C.H. Beach | Electric Grinder | |
| 1,464,595 | Aug. 14, 1923 | E. Bockshe | Grinder | bench or pedestal grinders |
| 1,464,959 | Aug. 14, 1923 | V.M. Tuthill | Grinding-wheel-truing device | |
| 1,482,856 | Feb. 05, 1924 | R.L. Morgan | Bearing for grinding spindles | grinders |
| 1,631,247 | Jun. 07, 1927 | C.M. Conradson | Gyratory Grinding Machine | grinders |
| 1,651,995 | Dec. 06, 1927 | W.P. Casey | Electric hand saw | handheld circular saws |
| 1,800,307 | Apr. 14, 1931 | W.A. Marschke, F.W. Marschke | Swing grinder | |
| 1,874,331 | Aug. 30, 1932 | L.T. Medholdt | Knife grinder support for woodworking machines | wood planers |
| 2,020,157 | Nov. 05, 1935 | H.L. Myers | Abrading shaft mounting | sanding machines |
| 2,065,099 | Dec. 22, 1936 | W.D. Archea, M. Romaine | Grinding Machine | grinding machines |
| 2,074,844 | Mar. 23, 1937 | C.H. Hill | Metalworking Machine | metal lathe accessories and attachments |
| 2,160,777 | May 30, 1939 | H. Ernst, A.H. Dall | Journal Bearing | grinding machines |
| 2,286,292 | Jun. 16, 1942 | A.W. Mall | Spindle assembly | |
| 2,397,178 | Mar. 26, 1946 | E.A. Reibig, C.A. Wiken | Surface grinder | surface grinders |
| 2,599,698 | Jun. 10, 1952 | A.H. Dall | Grinding Machine | grinding machines |
