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Patent applications and USPTO patent grants for ESCOLLE; Michel.The latest application filed is for "rotary-percussive hydraulic perforator provided with a stop piston and a braking chamber".
Patent | Date |
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Rotary-percussive Hydraulic Perforator Provided With A Stop Piston And A Braking Chamber App 20220274242 - CHEYLUS; Francois-Xavier ;   et al. | 2022-09-01 |
Hydraulic Rotary-percussive Hammer Drill Provided With A Stop Piston App 20220274240 - CHEYLUS; Francois-Xavier ;   et al. | 2022-09-01 |
Hydraulic Percussion Apparatus Equipped With A Sealing Device App 20210339371 - ESCOLLE; Michel | 2021-11-04 |
Sealing device for a hydraulic percussion apparatus, and hydraulic percussion apparatus comprising such a sealing device Grant 10,052,748 - Escolle August 21, 2 | 2018-08-21 |
Sealing Device For A Hydraulic Percussion Apparatus, And Hydraulic Percussion Apparatus Comprising Such A Sealing Device App 20150251304 - Escolle; Michel | 2015-09-10 |
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