SIGMA Logo (USPTO, 04/04/1958)
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The US trademark SIGMA was filed as Word and figurative mark on 04/04/1958 at the U.S. Patent and Trademark Office.
It was registered as a trademark on 04/21/1959.
The current status of the mark is "EXPIRED".
Trademark form | Word and figurative mark |
File reference | 72049087 |
Register number | 677288 |
Application date | April 4, 1958 |
Entry date | April 21, 1959 |
ID: 1372049087