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The US trademark SIGMA was filed as Word mark on 09/06/1968 at the U.S. Patent and Trademark Office.
It was registered as a trademark on 02/03/1970.
The current status of the mark is "EXPIRED".
| Trademark form | Word mark |
| File reference | 72306813 |
| Register number | 885428 |
| Application date | September 6, 1968 |
| Entry date | February 3, 1970 |
Trademark owner
3050 SPRUCE ST.
63103 ST. LOUIS
US
63103 ST. LOUIS
US
Trademark representatives
goods and services
20
PLANCHETS FOR RADIOACTIVE ASSAY AND THE LIKE
ID: 1372306813