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| All Patents in class 277/384 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,447,930 | Aug. 24, 1948 | J.L. Biggs | High-speed Oil Seal | shaft seals | |
| 2,966,374 | Dec. 27, 1960 | H. Jensen | Packing for Face Type Seals | shaft seals | |
| 3,120,959 | Feb. 11, 1964 | R.H. Andresen, H. Jensen | Unitized Face Type Rotary Seal | shaft seals | |
| 3,552,752 | Jan. 05, 1971 | B.V. Lojkutz | Shaft Seal | shaft seals | |
| 3,647,227 | Mar. 07, 1972 | G.H. Schultz, D.J. Warner, B.V. Lojkutz | Twin Take-Apart High-Temperature Shaft Seal | shaft seals | |