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| Patents for John O'Grady | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 179,758 | Jul. 11, 1876 | J.B. Price, C.E. Billings | Improvement in die-stocks | |
 | 286,478 | Oct. 09, 1883 | J. O'Grady | Insertable saw-tooth | |