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Patent applications and USPTO patent grants for Yahiro; Teruo.The latest application filed is for "method of and apparatus for crushing earth under the ground".
Patent | Date |
---|---|
Method of and apparatus for crushing earth under the ground Grant 4,688,648 - Ikeda , et al. August 25, 1 | 1987-08-25 |
Process for the high-pressure grouting within the earth and apparatus adapted for carrying out same Grant 4,084,648 - Yahiro , et al. April 18, 1 | 1978-04-18 |
High-velocity jet digging method Grant 4,047,580 - Yahiro , et al. September 13, 1 | 1977-09-13 |
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