Pearl; Douglas B.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Pearl; Douglas B..The latest application filed is for "tamper-resistant locking device and method".
- Pearl; Douglas B. - Hollywood FL
- Pearl; Douglas B. - Fort Lauderdale FL
- Pearl; Douglas B. - Pompano Beach FL
| Patent | Date |
|---|---|
| Expanding tool and method Grant 11,389,856 - Pearl, II , et al. July 19, 2 | 2022-07-19 |
| Refrigerant charging tool and method Grant 11,268,742 - Pearl, II , et al. March 8, 2 | 2022-03-08 |
| Refrigeration hose with multiple access points and method of evacuating an air conditioning or refrigeration unit using the same Grant 11,143,445 - Pearl , et al. October 12, 2 | 2021-10-12 |
| Tamper-Resistant Locking Device And Method App 20210247013 - Bukur; Dragan ; et al. | 2021-08-12 |
| Tool And Method For Additive Introduction Into Closed Systems App 20200041060 - Pearl, II; David S. ; et al. | 2020-02-06 |
| Expanding Tool And Method App 20190168282 - Pearl, II; David S. ; et al. | 2019-06-06 |
| High pressure fitting Grant 10,281,067 - Pearl, II , et al. | 2019-05-07 |
| Expanding tool and method Grant 10,226,810 - Pearl, II , et al. | 2019-03-12 |
| High Pressure Fitting App 20180340637 - Pearl, II; David S. ; et al. | 2018-11-29 |
| High pressure fitting Grant 10,066,769 - Pearl, II , et al. September 4, 2 | 2018-09-04 |
| Dual function adapter and method Grant 9,987,730 - Pearl, II , et al. June 5, 2 | 2018-06-05 |
| High Pressure Fitting App 20180142813 - Pearl, II; David S. ; et al. | 2018-05-24 |
| Method of coupling high pressure fitting Grant 9,897,237 - Pearl, II , et al. February 20, 2 | 2018-02-20 |
| Expanding Tool And Method App 20170348754 - Pearl, II; David S. ; et al. | 2017-12-07 |
| Vaporizing refrigerant charging tool with visual inspection window Grant 9,803,901 - Pearl, II , et al. October 31, 2 | 2017-10-31 |
| Refrigerant Charging Tool And Method App 20170122632 - Pearl, II; David S. ; et al. | 2017-05-04 |
| Dual Function Adapter And Method App 20170106506 - Pearl, II; David S. ; et al. | 2017-04-20 |
| Refrigeration Hose With Multiple Access Points And Method Of Evacuating An Air Conditioning Or Refrigeration Unit Using The Same App 20160290694 - Pearl; Douglas B. ; et al. | 2016-10-06 |
| High pressure fitting Grant 9,383,046 - Pearl, II , et al. July 5, 2 | 2016-07-05 |
| Flow regulator for nitrogen purging, system and method Grant 9,328,870 - Pearl, II , et al. May 3, 2 | 2016-05-03 |
| High Pressure Fitting App 20150362102 - Pearl, II; David S. ; et al. | 2015-12-17 |
| Flow Regulator For Nitrogen Purging, System And Method App 20150198287 - Pearl, II; David S. ; et al. | 2015-07-16 |
| High Pressure Fitting App 20140265317 - Pearl, II; David S. ; et al. | 2014-09-18 |
| Refrigerant Charging Tool And Method App 20120023972 - Pearl, II; David S. ; et al. | 2012-02-02 |
| Manifold body Grant D465,259 - Pearl , et al. November 5, 2 | 2002-11-05 |
| Gas cylinder carrier Grant 4,294,481 - Pearl October 13, 1 | 1981-10-13 |
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