Marshall; Richard D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Marshall; Richard D..The latest application filed is for "powered air breathing apparatus".
- Marshall; Richard D. - Skelmersdale GB
- Marshall; Richard D. - Bellevue WA
- Marshall; Richard D. - Skeimersdale GB
- Marshall; Richard D. - Poolesville MD
Trademarks
| Patent | Date |
|---|---|
| Powered Air Breathing Apparatus App 20200276461 - Zwolinsky; Albert F. ; et al. | 2020-09-03 |
| Powered air breathing apparatus Grant 10,695,592 - Zwolinsky , et al. | 2020-06-30 |
| Breathing apparatus Grant 10,668,307 - Zwolinsky , et al. | 2020-06-02 |
| Powered Air Breathing Apparatus App 20180221691 - ZWOLINSKY; Albert F. ; et al. | 2018-08-09 |
| Visual post builder Grant 9,582,610 - Karunakaran , et al. February 28, 2 | 2017-02-28 |
| Powered Air Breathing Apparatus App 20160317845 - Zwolinsky; Albert F. ; et al. | 2016-11-03 |
| Improvements to powered air breathing apparatus Grant 9,387,299 - Zwolinsky , et al. July 12, 2 | 2016-07-12 |
| Visual Post Builder App 20140280054 - Karunakaran; Rajeev ; et al. | 2014-09-18 |
| Improvements To Powered Air Breathing Apparatus App 20130319408 - Zwolinsky; Albert F. ; et al. | 2013-12-05 |
| Ambient pressure probe Grant 3,950,995 - Marshall April 20, 1 | 1976-04-20 |
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