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The US trademark CALL THREADING was filed as Word mark on 10/07/1991 at the U.S. Patent and Trademark Office. The current status of the mark is "ABANDONED - EXPRESS".
| Trademark form | Word mark |
| File reference | 74210445 |
| Application date | October 7, 1991 |
Trademark owner
Post Office Box 9090
346189090 Clearwater
US
346189090 Clearwater
US
goods and services
9
system to enhance a telephone signal; namely, directing the signal to a digital switch matrix connected to a digital signal processor in international
ID: 1374210445