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| Patent US612 | |||||
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| Number | Date | Patentee | Title | Type | |
| 612 | Feb. 21, 1838 | S. Shepherd, D. Baldwin | Matcher | wood planers | |
| XC-612 | Mar. 20, 1856 | T. Ritchie | Improvement in the draft applied to reaping, mowing or other machines | reapers | |