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| All Patents in class 277/394 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,844,393 | Jul. 22, 1958 | H. Jensen | Shaft Seal With Radially Compacting Sealing Surfaces | shaft seals | |
| 3,592,479 | Jul. 13, 1971 | R.H. Andresen | Shaft Seal | shaft seals | |
| 3,647,227 | Mar. 07, 1972 | B.V. Lojkutz, G.H. Schultz, D.J. Warner | Twin Take-Apart High-Temperature Shaft Seal | shaft seals | |
| 3,897,957 | Aug. 05, 1975 | D.J. Warner | Ring Seal, Assembly and Method of Manufacturing | shaft seals | |