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| All Patents in class 277/401 | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | 1,070,087 | Aug. 12, 1913 | J.H. Van Deventer | Metallic Packing | |
| 1,764,727 | Jun. 17, 1930 | L.B. Kapp | Lubrication of Bearings | ||