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The US trademark DUO-PHASE was filed as Word mark on 09/14/1987 at the U.S. Patent and Trademark Office.
It was registered as a trademark on 05/17/1988.
The current status of the mark is "CANCELLED - SECTION 8".
| Trademark form | Word mark |
| File reference | 73684042 |
| Register number | 1488307 |
| Application date | September 14, 1987 |
| Publication date | February 23, 1988 |
| Entry date | May 17, 1988 |
Trademark owner
112 WASHINGTON STREET
02032 EAST WALPOLE
US
02032 EAST WALPOLE
US
Trademark representatives
goods and services
11
GLASS FIBER FILTER MEDIA
ID: 1373684042