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The US trademark DUO-SONIC was filed as Word mark on 07/20/1973 at the U.S. Patent and Trademark Office.
It was registered as a trademark on 02/11/1975.
The current status of the mark is "EXPIRED".
Trademark form | Word mark |
File reference | 72463538 |
Register number | 1004455 |
Application date | July 20, 1973 |
Entry date | February 11, 1975 |
ID: 1372463538