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| Patents for Denis Parry | |||||
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| Number | Date | Patentee | Title | Type | |
| 518,646 | Apr. 24, 1894 | J.H. Hall, D. Parry | Chain mortiser | mortising machines | |
| 593,684 | Nov. 16, 1897 | D. Parry | Chain for mortising-machines | mortising machines | |