KEYSTONE Logo (USPTO, 06/01/1971)
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The US trademark KEYSTONE was filed as Word and figurative mark on 06/01/1971 at the U.S. Patent and Trademark Office.
It was registered as a trademark on 08/29/1972.
The current status of the mark is "EXPIRED".
| Trademark form | Word and figurative mark |
| File reference | 72393721 |
| Register number | 941840 |
| Application date | June 1, 1971 |
| Entry date | August 29, 1972 |
Trademark owner
WARREN
US
goods and services
4
KEROSENE, FUEL OIL AND DIESEL FUEL
ID: 1372393721