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| Patents for James Virtue | |||||
| Number | Date | Patentee | Title | Type | |
| GB-190,908,274 | Mar. 24, 1910 | A. Chatwin, J. Chatwin, T. Chatwin, T.P. Chatwin, J. Virtue | Improvements in and relating to die heads of screwing machines | metal threading machines | |
| 996,311 | Jun. 27, 1911 | T. Chatwin, T.P. Chatwin, J. Virtue | Die-head of screwing-machines | metal threading machines | |