Keller; Robert Earl
Patent Applications and Registrations
Patent applications and USPTO patent grants for Keller; Robert Earl.The latest application filed is for "permanent ink marker for re-identifying wire".
- Keller; Robert Earl - Spring Valley OH
| Patent | Date |
|---|---|
| Permanent ink marker for re-identifying wire Grant 6,582,142 - Keller , et al. June 24, 2 | 2003-06-24 |
| Permanent ink marker for re-identifying wire App 20020100138 - Keller, Robert Earl ; et al. | 2002-08-01 |
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