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The US trademark DUO STEM was filed as Word mark on 02/27/2012 at the U.S. Patent and Trademark Office.
It was registered as a trademark on 10/09/2012.
The current status of the mark is "IR CANCELLED; US REGISTRATION CANCELLED".
Trademark form | Word mark |
File reference | 4220081 |
Register number | 79110730 |
Application date | February 27, 2012 |
Entry date | October 9, 2012 |
Expiration date | October 9, 2022 |
ID: 13