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| All Patents in class 300/14 | |||||
| Picture | Number | Date | Patentee | Title | |
| 718 | Apr. 28, 1838 | J.M. Spooner | Broom Machine | ||
| 5,444 | Feb. 15, 1848 | H. Warner | Broom Machine | ||
| 628,730 | Jul. 11, 1899 | F. Harrington, A. Whitney | Work Holder for Lathe Spindles | ||