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| Patents for Henry Houghton | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 558,874 | Apr. 21, 1896 | J. Grannis | Axle Nut Wrench | |
 | 559,559 | May 05, 1896 | J.E. Worthen | Circumferential Dividers | |
 | 605,441 | Jun. 07, 1898 | A.E. Brockett | Pipe Wrench | |