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| All Patents in class 428/460 | |||||
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| Number | Date | Patentee | Title | Type | |
| 651,417 | Jun. 12, 1900 | N.H. Fay | Feed Motion for Lathes | metalworking power transmission | |
| 2,307,588 | Jan. 05, 1943 | R.W. Hall, E.H. Jackson | Insulated electrical conductor | electric motors | |