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Patent applications and USPTO patent grants for Harrington; David M..The latest application filed is for "modified surface properties of percussion tools used in downhole drilling".
Patent | Date |
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Modified surface properties of percussion tools used in downhole drilling Grant 10,590,525 - Plana , et al. | 2020-03-17 |
Modified Surface Properties Of Percussion Tools Used In Downhole Drilling App 20180202033 - Plana; Anthony Stuart ;   et al. | 2018-07-19 |
Modified surface properties of percussion tools used in downhole drilling Grant 9,951,409 - Plana , et al. April 24, 2 | 2018-04-24 |
Modified Surface Properties Of Percussion Tools Used In Downhole Drilling App 20170088932 - Plana; Anthony Stuart ;   et al. | 2017-03-30 |
Input/output controller for controlling the sequencing of the execution of input/output commands in a data processing system Grant 4,939,644 - Harrington , et al. * July 3, 1 | 1990-07-03 |
I/O controller for controlling the sequencing of execution of I/O commands and for permitting modification of I/O controller operation by a host processor Grant 4,901,232 - Harrington , et al. February 13, 1 | 1990-02-13 |
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