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Patents Granted on 1843-03-21 | |||||
Number | Date | Patentee | Title | Type | |
3,008 | Mar. 21, 1843 | T. Blanchard | Work-rest for machine for turning irregular forms | pattern lathes | |
3,014 | Mar. 21, 1843 | E. Martin | Improvement in Awl Hafts |