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| All Patents in class 277/399 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,057,762 | Apr. 01, 1913 | A. Muehlmatt | Holder for engraving-blocks | ||
| 1,895,288 | Jan. 24, 1933 | E.P. Larsh | Bearing mounting | motor armatures | |
| 2,448,195 | Aug. 31, 1948 | C.F. Schnuck | Cane Mill | sugar cane apparatus | |
| 3,138,390 | Jun. 23, 1964 | H. Jensen | Rotary Seal With Annular Bead | shaft seals | |