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Patent applications and USPTO patent grants for Ausen; David L..The latest application filed is for "helmet-mounted respirator apparatus with a dual plenum system".
Patent | Date |
---|---|
Air filtration device Grant 9,358,409 - Ausen June 7, 2 | 2016-06-07 |
Radial blower with shaped scroll profile Grant 8,667,960 - Ausen March 11, 2 | 2014-03-11 |
Air Filtration Device App 20130014752 - Ausen; David L. | 2013-01-17 |
Helmet-mounted Respirator Apparatus With A Dual Plenum System App 20130014751 - Ausen; David L. | 2013-01-17 |
Radial Blower With Shaped Scroll Profile App 20110240026 - Ausen; David L. | 2011-10-06 |
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