Campbell; Donald B.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Campbell; Donald B..The latest application filed is for "insulated flexible duct using compressible core spacer and method of use".
- Campbell; Donald B. - Gallatin TN
- Campbell; Donald B. - Greenwood SC
- Campbell; Donald B. - Indianapolis IN
- Campbell; Donald B. - Carmel IN
- Campbell; Donald B. - Northampton PA
- Campbell; Donald B. - Franklin TN
| Patent | Date |
|---|---|
| Insulated duct with air gap and method of use Grant 11,035,501 - Carlay, II , et al. June 15, 2 | 2021-06-15 |
| Insulated flexible duct using compressible core spacer and method of use Grant 10,767,892 - Campbell , et al. Sep | 2020-09-08 |
| Insulated Flexible Duct Using Compressible Core Spacer And Method Of Use App 20200166238 - CAMPBELL; Donald B. ; et al. | 2020-05-28 |
| Insulated Duct With Air Gap And Method Of Use App 20190285204 - CARLAY II; Ronald L. ; et al. | 2019-09-19 |
| Insulated duct with air gap and method of use Grant 10,352,482 - Carlay, II , et al. July 16, 2 | 2019-07-16 |
| Insulated duct with air gap and method of use Grant 10,295,218 - Campbell , et al. | 2019-05-21 |
| Agriculturally active product Grant 10,233,013 - Campbell , et al. | 2019-03-19 |
| Agriculturally Active Product App 20170158421 - Campbell; Donald B. ; et al. | 2017-06-08 |
| Insulated Duct With Air Gap And Method Of Use App 20170146157 - Carlay, II; Ronald L. ; et al. | 2017-05-25 |
| Agriculturally active product Grant 9,604,774 - Campbell , et al. March 28, 2 | 2017-03-28 |
| Insulated Duct With Air Gap And Method Of Use App 20170038091 - Campbell; Donald B. ; et al. | 2017-02-09 |
| Agriculturally Active Product App 20150274408 - Campbell; Donald B. ; et al. | 2015-10-01 |
| Agriculturally active product Grant 9,125,339 - Campbell , et al. September 8, 2 | 2015-09-08 |
| Agriculturally Active Product App 20140151261 - Campbell; Donald B. ; et al. | 2014-06-05 |
| Disposable serving bowl and lid Grant D550,041 - Rush , et al. September 4, 2 | 2007-09-04 |
| Transmission casing cover with tubular mechanically crimped conduit cast in situ Grant 5,111,872 - Diehl , et al. May 12, 1 | 1992-05-12 |
| Transmission casing cover with tubular conduit cast in situ Grant 4,958,537 - Diehl , et al. September 25, 1 | 1990-09-25 |
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