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| Patents Granted on 1855-08-21 | |||||
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| Number | Date | Patentee | Title | Type | |
| 13,456 | Aug. 21, 1855 | J.D. Dale | Dale's Adjustable Reversible Ratchet-Wrench | ratchet wrenches | |
| 13,458 | Aug. 21, 1855 | S. Gerhard, W. Fields | Water Wheel | water wheels | |
| 13,475 | Aug. 21, 1855 | C. Ketcham | Machine for sawing shingles | shingle machines | |