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Patents Granted on 1964-06-23 | |||||
Number | Date | Patentee | Title | Type | |
3,138,043 | Jun. 23, 1964 | B.R. Greuner | Boring Head | boring heads | |
3,138,390 | Jun. 23, 1964 | H. Jensen | Rotary Seal With Annular Bead | shaft seals |