Hammerbeck; John Philip Roger
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hammerbeck; John Philip Roger.The latest application filed is for "heat transfer device".
- Hammerbeck; John Philip Roger - London GB
| Patent | Date |
|---|---|
| Heat Transfer Device App 20130213613 - Hammerbeck; John Philip Roger ; et al. | 2013-08-22 |
| Compression Method And Means App 20120070326 - Hammerbeck; John Philip Roger | 2012-03-22 |
| Coil spring App 20030168792 - Hammerbeck, John Philip Roger | 2003-09-11 |
| Variable speed drive App 20030083167 - Hammerbeck, John Philip Roger | 2003-05-01 |
| Variable speed drive App 20010031679 - Hammerbeck, John Philip Roger | 2001-10-18 |
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