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| All Patents in class 403/295 | |||||
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| Number | Date | Patentee | Title | Type | |
| 272,940 | Feb. 27, 1883 | B.F. Bergh | Gear-wheel | industrial machine gearing | |
| 869,055 | Oct. 22, 1907 | B.S. Burroughs | Splice and joint | ||