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The US trademark SIGMA was filed as Word mark on 06/04/1970 at the U.S. Patent and Trademark Office.
It was registered as a trademark on 07/18/1972.
The current status of the mark is "EXPIRED".
| Trademark form | Word mark |
| File reference | 72361760 |
| Register number | 938083 |
| Application date | June 4, 1970 |
| Entry date | July 18, 1972 |
Trademark owner
170 PEARL ST.
02185 BOSTON
US
02185 BOSTON
US
goods and services
9
PROTECTIVE AND CONTROLLING SYSTEMS FOR POWER LINES-NAMELY, VOLTAGE SENSING CAPACITOR CONTROLS, CURRENT SENSING CAPACITOR CONTROLS, POWER FACTOR SENSING CAPACITOR CONTROLS, OVERCURRENT CONTROLS, MONITORING INSTRUMENTS FOR VOLTAGE CURRENT AND POWER FACTOR; MEASURING, INDICATING AND CONTROLLING INSTRUMENTS-NAMELY, CONTROL PYROMETERS, ELECTRONIC CONTROL METERS, ELECTRONIC SET-POINT CONTROLS, MULTIPOINT CONTROLLERS, DIGITAL METERS, WARNING FLAG MECHANISMS, MULTI-TESTER METERS, PANEL METERS, METER RELAYS AND DIGITAL CONTROL SYSTEMS
ID: 1372361760