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The US trademark KEYSTONE was filed as Word mark on 02/11/1975 at the U.S. Patent and Trademark Office.
It was registered as a trademark on 12/16/1975.
The current status of the mark is "REGISTERED AND RENEWED".
| Trademark form | Word mark |
| File reference | 1027536 |
| Register number | 73043944 |
| Application date | February 11, 1975 |
| Entry date | December 16, 1975 |
| Expiration date | December 16, 2025 |
Trademark owner
390 Interlocken Crescent, Suite 1000
80021 Broomfield
US
80021 Broomfield
US
Trademark representatives
701 5th Avenue, Suite 5400
98104 Seattle
US
goods and services
35
Advertising and Business
41
Education and Entertainment
42
Scientific and computer services
ID: 13