Logo (USPTO, 02/02/1976)
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The US trademark was filed as Figurative mark on 02/02/1976 at the U.S. Patent and Trademark Office.
It was registered as a trademark on 01/11/1977.
The current status of the mark is "EXPIRED".
| Trademark form | Figurative mark |
| File reference | 73083283 |
| Register number | 1056054 |
| Application date | February 2, 1976 |
| Entry date | January 11, 1977 |
Trademark owner
425 N. MICHIGAN AVE.
60611 CHICAGO
US
60611 CHICAGO
US
goods and services
16
ENCYCLOPEDIAS
ID: 1373083283