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| All Patents in class 277/530 | |||||
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| Number | Date | Patentee | Title | Type | |
| 454,093 | Jun. 16, 1891 | R. Ryan, S. Udstad | Rod Packing | steam engine packing | |
| 1,510,205 | Sep. 30, 1924 | J.T. Beaty | Cotton tamper | ||