Koellner; Walter
Patent Applications and Registrations
Patent applications and USPTO patent grants for Koellner; Walter.The latest application filed is for "method for powering mining equipment".
- Koellner; Walter - Suwanee GA
| Patent | Date |
|---|---|
| System and method for reinjection of retard energy in a trolley-based electric mining haul truck Grant 8,550,008 - Mazumdar , et al. October 8, 2 | 2013-10-08 |
| Method for powering mining equipment Grant 7,398,012 - Koellner July 8, 2 | 2008-07-08 |
| Dragline excavating machine with direct drive hoist and drag drums Grant 7,024,805 - Onsager , et al. April 11, 2 | 2006-04-11 |
| Method for powering mining equipment App 20050254801 - Koellner, Walter | 2005-11-17 |
| System for powering mining equipment App 20050253551 - Koellner, Walter | 2005-11-17 |
| Dragline excavating machine with direct drive hoist and drag drums App 20040055185 - Onsager, Michael G. ; et al. | 2004-03-25 |
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