| All Patents in class 451/401 |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 763,315 | Jun. 21, 1904 | J.M. Nash | Machine for reducing wood or other material | |
| 1,203,844 | Nov. 07, 1916 | A.C. Page, C. Booth | Grinding Machine | grinding machines |
| 1,628,618 | May 10, 1927 | H.K. Spencer | Means For Handling Articles | grinding attachments |
| 1,632,600 | Jun. 14, 1927 | F.O. Hoagland | Internal Grinding Machine | internal grinders |
| 1,732,119 | Oct. 15, 1929 | A.L. Brown | Automatic combined turning lathe and sander for woodwork | pattern lathes |
| 1,753,590 | Apr. 08, 1930 | F.K. Benedict | Workholder for bar-grinding machines | |
| 2,138,264 | Nov. 29, 1938 | A.L. Warner | Work holder for mower sections | |
| 2,604,740 | Jul. 29, 1952 | H.C. Perkins | Machine for yieldably presenting work to buffing or polishing wheels or belts | |
| 2,622,375 | Dec. 23, 1952 | F.S. Haas, W. Trible | Grinding Machine | surface grinders |
| 2,636,321 | Apr. 28, 1953 | J.C. Wilson | Machine tool | grinders |
| 2,649,668 | Aug. 25, 1953 | H.C. Perkins, C.A. Zinn | Rotary turret for multiple spindle polishing and buffing machines | |
