loadpatents
Patent applications and USPTO patent grants for Martin; Hardison G..The latest application filed is for "audio power amplifier".
Patent | Date |
---|---|
Audio power amplifier Grant 9,190,960 - Martin , et al. November 17, 2 | 2015-11-17 |
Audio Power Amplifier App 20150270810 - Martin; Hardison G. ;   et al. | 2015-09-24 |
End of branch module system Grant 8,903,099 - Martin , et al. December 2, 2 | 2014-12-02 |
End Of Branch Module System App 20130089210 - Martin; Hardison G. ;   et al. | 2013-04-11 |
Courtesy announcement system and method of using Grant 8,077,877 - Martin , et al. December 13, 2 | 2011-12-13 |
Information broadcasting system Grant 7,694,325 - Martin , et al. April 6, 2 | 2010-04-06 |
Audio system end of line load module providing a load on the audio circuit in response to a test signal Grant 7,602,282 - Martin , et al. October 13, 2 | 2009-10-13 |
Audio system end of line load module App 20080144845 - Martin; Hardison G. ;   et al. | 2008-06-19 |
Information broadcasting system App 20030143944 - Martin, Hardison G. ;   et al. | 2003-07-31 |
Balanced amplifier device Grant 4,571,554 - Martin , et al. February 18, 1 | 1986-02-18 |
Sound mixer devices Grant 4,374,300 - Ponto , et al. February 15, 1 | 1983-02-15 |
Multiple input audio program system Grant 4,359,602 - Ponto , et al. November 16, 1 | 1982-11-16 |
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