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| Patents for Jno. E. Parker | |||||
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| Number | Date | Patentee | Title | Type | |
| 538,841 | May 07, 1895 | V.J. McDonnell | Monkey Wrench | quick adjust wrenches | |
| 582,238 | May 11, 1897 | F. Schrader | Adjustable Spanner-Wrench | wrench combination tools | |