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The US trademark KEYSTONE SERIES was filed as Word mark on 03/22/2006 at the U.S. Patent and Trademark Office. The current status of the mark is "REGISTERED AND RENEWED".
| Trademark form | Word mark |
| File reference | 3357685 |
| Register number | 78843108 |
| Application date | March 22, 2006 |
Trademark owner
1777 South Harrison Street, Suite 600
80210 Denver
US
80210 Denver
US
goods and services
19
Non-metallic building materials
37
Building construction and repair
ID: 13