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The US trademark KNOTTY PROBLEMS was filed as Word mark on 05/31/1995 at the U.S. Patent and Trademark Office.
It was registered as a trademark on 02/18/1997.
The current status of the mark is "CANCELLED - SECTION 8".
Trademark form | Word mark |
File reference | 74682394 |
Register number | 2039446 |
Application date | May 31, 1995 |
Publication date | January 30, 1996 |
Entry date | February 18, 1997 |
ID: 1374682394