Kleefstra; Meindert
Patent Applications and Registrations
Patent applications and USPTO patent grants for Kleefstra; Meindert.The latest application filed is for "indoor air quality sense and control system".
- Kleefstra; Meindert - Vancouver WA
- Kleefstra; Meindert - Portland OR
- Kleefstra; Meindert - Salmon Creek WA
- Kleefstra; Meindert - Solon OH
| Patent | Date |
|---|---|
| Indoor Air Quality Sense And Control System App 20160116181 - Aultman; Don ; et al. | 2016-04-28 |
| Tamper resistant radon detector Grant 7,317,185 - Kleefstra January 8, 2 | 2008-01-08 |
| Tamper Resistant Radon Detector App 20070131859 - Kleefstra; Meindert | 2007-06-14 |
| Opto-electric device for measuring the root-mean-square value of an alternating current voltage Grant 6,724,179 - Kingsley , et al. April 20, 2 | 2004-04-20 |
| Opto-electric device for measuring the root-mean-square value of an alternating current voltage App 20030042884 - Kingsley, Stuart A. ; et al. | 2003-03-06 |
| Opto-electric device for measuring the root-mean-square value of an alternating current voltage Grant 6,479,979 - Kingsley , et al. November 12, 2 | 2002-11-12 |
| Crest factor measurement device Grant 5,220,276 - Kleefstra June 15, 1 | 1993-06-15 |
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