Hale; C. David
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hale; C. David.The latest application filed is for "motorized drain cleaning machine".
- Hale; C. David - Wilmington OH
| Patent | Date |
|---|---|
| Motorized drain cleaning machine Grant 9,009,906 - Hale , et al. April 21, 2 | 2015-04-21 |
| Motorized Drain Cleaning Machine App 20140173840 - Hale; C. David ; et al. | 2014-06-26 |
| Motorized drain cleaning machine with speed controller Grant 8,615,837 - Hale , et al. December 31, 2 | 2013-12-31 |
| Sewer cleaning machine Grant 7,891,038 - Hale February 22, 2 | 2011-02-22 |
| Sewer Cleaning Machine App 20100218325 - Hale; C. David | 2010-09-02 |
| Sewer cleaning machine Grant 7,757,332 - Hale July 20, 2 | 2010-07-20 |
| Motorized Drain Cleaning Machine App 20090211044 - Hale; C. David ; et al. | 2009-08-27 |
| Connector for Pipe Cleaning Apparatus App 20090208282 - Hale; C. David | 2009-08-20 |
| Torque limiting drive pulley for a belt driven drain cleaning machine Grant 7,222,383 - Hale May 29, 2 | 2007-05-29 |
| Torque limiting drive pulley for a belt driven drain cleaning machine App 20040194241 - Hale, C. David | 2004-10-07 |
| Connector for pipe cleaning apparatus App 20030231927 - Hale, C. David | 2003-12-18 |
| Cable coupler Grant 4,887,929 - Hale December 19, 1 | 1989-12-19 |
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