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The US trademark SIGMA was filed as Word mark on 05/28/1970 at the U.S. Patent and Trademark Office.
It was registered as a trademark on 10/03/1972.
The current status of the mark is "EXPIRED".
Trademark form | Word mark |
File reference | 72361174 |
Register number | 944089 |
Application date | May 28, 1970 |
Entry date | October 3, 1972 |
ID: 1372361174