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The US trademark DUO-THERM was filed as Word mark on 07/19/1950 at the U.S. Patent and Trademark Office.
It was registered as a trademark on 07/03/1951.
The current status of the mark is "EXPIRED".
| Trademark form | Word mark |
| File reference | 71600904 |
| Register number | 544633 |
| Application date | July 19, 1950 |
| Entry date | July 3, 1951 |
Trademark owner
701-735 EAST SAGINAW STREET
LANSING
US
LANSING
US
goods and services
11
OIL BURNING SPACE HEATERS, GAS BURNING SPACE HEATERS, [ OIL BURNING BASEMENT AND FLOOR FURNACES, GAS BURNING FLOOR FURNACES, ]IL BURNING WATER HEATERS, GAS BURNING WATER HEATERS, [ DRAFT REGULATORS, ] BLOWERS, AND HUMIDIFIERS
ID: 1371600904