D/F Logo (USPTO, 04/02/1979)
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The US trademark D/F was filed as Word and figurative mark on 04/02/1979 at the U.S. Patent and Trademark Office.
It was registered as a trademark on 06/30/1981.
The current status of the mark is "REGISTERED AND RENEWED".
Logodesign (Wiener Klassifikation)
#USPTO: 26.17.13 - Underlined words or letters, Letters or words underlined and/or overlined by one or more strokes or lines, Overlined words or letters
| Trademark form | Word and figurative mark |
| File reference | 1158894 |
| Register number | 73209838 |
| Application date | April 2, 1979 |
| Entry date | June 30, 1981 |
| Expiration date | June 30, 2031 |
Trademark owner
1750 Howard Dr.
56001 North Mankato
US
56001 North Mankato
US
Trademark representatives
Suite 8000
60606-6448 Chicago
US
goods and services
9
Electrical and Scientific Apparatus
ID: 13