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Patent applications and USPTO patent grants for Backhus; Roger F..The latest application filed is for "non-energetics based detonator".
Patent | Date |
---|---|
Non-energetics based detonator Grant 9,347,755 - Backhus , et al. May 24, 2 | 2016-05-24 |
Non-energetics Based Detonator App 20150260496 - Backhus; Roger F. ;   et al. | 2015-09-17 |
Electronic detonator system Grant 8,746,144 - Givens , et al. June 10, 2 | 2014-06-10 |
Electronic Detonator System App 20140123866 - Givens; Richard W. ;   et al. | 2014-05-08 |
Non-energetics based detonator Grant 8,661,978 - Backhus , et al. March 4, 2 | 2014-03-04 |
Electronic detonator system Grant 8,468,944 - Givens , et al. June 25, 2 | 2013-06-25 |
Non-energetics Based Detonator App 20130125772 - Backhus; Roger F. ;   et al. | 2013-05-23 |
Electronic Detonator System App 20120227608 - Givens; Richard W. ;   et al. | 2012-09-13 |
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