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| All Patents in class 451/183 | |||||
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| Number | Date | Patentee | Title | Type | |
| 396,553 | Jan. 22, 1889 | J.L. Fowle | Machinery for grinding metallic bands | tool making machines | |
| 404,582 | Jun. 04, 1889 | S. Wheeler | Machine for making perforations in paper | ||
| 7,585,206 | Sep. 08, 2009 | J.R. Memmelaar, Jr. | Spool to Spool Continuous Through Feed System | centerless grinders | |