SIGMA Logo (USPTO, 12/29/1949)
USPTOProtect this trademark from copycats!
With our trademark monitoring alerts, you are automatically notified by email about copycats and free riders.
The US trademark SIGMA was filed as Word and figurative mark on 12/29/1949 at the U.S. Patent and Trademark Office.
It was registered as a trademark on 01/09/1951.
The current status of the mark is "EXPIRED".
| Trademark form | Word and figurative mark |
| File reference | 71590106 |
| Register number | 536253 |
| Application date | December 29, 1949 |
| Entry date | January 9, 1951 |
Trademark owner
70 CYLON STREET
BOSTON
US
BOSTON
US
goods and services
9
ELECTRICAL RELAYS [ AND ACOUSTIC SWITCHES]
ID: 1371590106