COLBY; Douglas D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for COLBY; Douglas D..The latest application filed is for "groundwater sampling pump".
- COLBY; Douglas D. - Clarkston MI
| Patent | Date |
|---|---|
| Groundwater Sampling Pump App 20200256342 - A1 | 2020-08-13 |
| Removable orifice plate device Grant 9,926,759 - Colby March 27, 2 | 2018-03-27 |
| Pump Having Edge Mounted O-Ring Seal App 20180058464 - COLBY; Douglas D. | 2018-03-01 |
| Fine control gas valve Grant 9,695,945 - Colby , et al. July 4, 2 | 2017-07-04 |
| Groundwater Sampling Pump App 20160298632 - COLBY; Douglas D. ; et al. | 2016-10-13 |
| Removable Orifice Plate Device App 20150376969 - COLBY; Douglas D. | 2015-12-31 |
| Molded well head cover Grant 9,068,421 - Colby June 30, 2 | 2015-06-30 |
| Fine Control Gas Valve App 20140283930 - COLBY; Douglas D. ; et al. | 2014-09-25 |
| Fine control gas valve Grant 8,800,597 - Colby , et al. August 12, 2 | 2014-08-12 |
| Molded Well Head Cover App 20140110099 - Colby; Douglas D. | 2014-04-24 |
| Removable Orifice Plate Device App 20130180703 - Colby; Douglas D. | 2013-07-18 |
| Fine Control Gas Valve App 20120261601 - Colby; Douglas D. ; et al. | 2012-10-18 |
| Cam-bolt Assembly App 20110176865 - Colby; Douglas D. ; et al. | 2011-07-21 |
| Variable thickness pin clamp Grant 7,686,286 - Colby March 30, 2 | 2010-03-30 |
| Hook clamp unit Grant 7,669,840 - Xu , et al. March 2, 2 | 2010-03-02 |
| Power clamp Grant 7,314,214 - Colby , et al. January 1, 2 | 2008-01-01 |
| Hook pin unit having weld slag protection Grant 7,311,301 - Liu , et al. December 25, 2 | 2007-12-25 |
| Variable thickness pin clamp App 20070045362 - Colby; Douglas D. | 2007-03-01 |
| Power clamp App 20060290042 - Colby; Douglas D. ; et al. | 2006-12-28 |
| Hook clamp unit App 20060163790 - Xu; Liu ; et al. | 2006-07-27 |
| Hook pin unit having weld slag protection App 20060103063 - Liu; Xu ; et al. | 2006-05-18 |
| Cylinder lock Grant 6,832,539 - Colby December 21, 2 | 2004-12-21 |
| Cylinder lock App 20040007127 - Colby, Douglas D. | 2004-01-15 |
| Power clamp mechanism Grant 6,655,673 - Colby December 2, 2 | 2003-12-02 |
| Locking power clamp Grant 6,386,598 - Dykstra , et al. May 14, 2 | 2002-05-14 |
| New power clamp mechanism App 20020043751 - Colby, Douglas D. | 2002-04-18 |
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