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| All Patents in class 451/54 | |||||
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| Number | Date | Patentee | Title | Type | |
| 152,572 | Jun. 30, 1874 | G. Munger | Improvement in the processes for smoothing wood surfaces | sanding machines | |
| 1,637,487 | Aug. 02, 1927 | F.M. Kern | Process of Sizing and Finishing Articles of Fiber | grinding machines | |
| 1,767,321 | Jun. 24, 1930 | H.F. Skillings | Abrasive Wheel | grinder wheels | |
| 7,585,206 | Sep. 08, 2009 | J.R. Memmelaar, Jr. | Spool to Spool Continuous Through Feed System | centerless grinders | |